MS3 code uses a somewhat different wiring pattern for the MS3X outputs. I get to installing the MS3X. They all go to the ground pins on the DB37 which all connect to the ground plane of the PCB. Distributor Side: Harness Side: Purpose: Red: B/W: 12v+ White: G. 3. ( 14 questions) 5 out of 5 based on 8 customer ratings. I am able to read a signal on the wire to the harness. Add to cart. 00. In the end, the largest wires I used for the ECM side of things was 18awg for the injectors and coils, and that was. 49 38NPT-Bung_A: Aluminum bung for. Dated: Hardware manual covering specific wiring and 3. 1 ecu that is the vanos motor. RPM was around 300 U/min. The spark wires might be custom or stock. Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37 Heavy duty metal DB37 hood for superior RFI/EMI shielding (no cheap plastic ‘metalized’I've personally found PWM valves a little easier to configure - you just need to set the frequency (Ford runs theirs at 300 Hz) and adjust the duty cycle until you hit your desired RPM. I wrote the 3 wire mode so the 3-wire valve can be driven as the manufacturer intended. Also using a jimstim 2. 99. 00. Everything on the jimstim works too except the rpm signal. MS3X setup and comm issues. I have a m50 NON-Vanos motor with a Motronic 3. MegaSquirt MS3X Wiring Harness – 8 feet 8′ of TXL High temp automotive grade wire. I've tried each wire from the sensor. -. Everything checks good in the engine harness. This version of the documentation applies to: • MS2 on a V3. This version of the documentation applies to: • MS3 on a V3. MegaSquirt MS3X Wiring Harness - 8 feet 8' of TXL High temp automotive grade wire. Sequential Fuel and spark plus a WHOLE LOT more! Professionally engineered and easy to install, fire up your L-series engine on day one! All wiring is composed of, self-extinguishing wrapped hi-temp TXL automotive grade wire with OEM connectors. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. 57 in car for the first time and am running diagnostics. sjpgoalie. 6 with itbs & ms3x into g50 carrera – the story so far MegaSquirt MS3X Wiring Harness - 8 feet 8' of TXL High temp automotive grade wire. Hardware. 1. 99. 2 digital outputs. Description. 99. MS3Pro ULTIMATE Pinout Glossy Card. Step 1) Decide which manual is correct for your engine (24x reluctor engine or 58x reluctor engine). Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here!Yesterday my wiring harness was finished. We've got a pre-assembled MS3 with the MS3X extra board, and I believe it is a V3. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. 3) MS3 Cam Input (Dual VR v2. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . Look foir Pt. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. Ibrahim Nzioki On Twitter 2 Engine Harness Layout Since The Donor Was From An E36. I was poking around tuner studio and noticed that I had the ability to set the firing order once I. Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37; Heavy duty metal DB37 hood for superior RFI/EMI shielding (no cheap plastic ‘metalized’ hoods used on our harnesses) Use with MS3X Expansion board; This is the harness for the MS3X Expansion. The MS3 case is like a 2 1/2" high version of a regular V3. 3. 57 Hardware Manual Megasquirt-3 Product Range MS3 1. 5 out of 5 $ 114. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. 49 $ 6. Top. 3 Re-pinning the DB37; 3. And we offer volume discounts if you’re making a production run. 8′ MegaSquirt Wiring Harness for MS3X. Note that the DIY Autotune wiring harness has a shielded wire – connect only the inner wire to this pin! Connect the E pin to pin 27. Crank sensor is standard 3. It looks like both sensors use the same ground connection. 99 Quantity Add to cart MegaSquirt MS3X Wiring Harness – 8 feet 8′ of TXL High temp automotive grade wire. 00 MS3X-Hrn: 8' MS3X wiring harness $22. SAYS IF HALL SENSOR. MegaSquirt MS3X Wiring Pigtail – Length = 24″. 3. I have recently purchased the ms3x 3. 0 mainboard. 0, wire TachSelect to VRIN and TSEL to VROUTINV. We’ve got your MS3Pro ECU with drop-on/PNP LS Wiring Harness, ready to make the job EASY! News & Updates Read More. If someone with more experience could look over my setup I'd be ecstatic. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. 0 MicroSquirt with 8′ Harness is an entry-level, fully assembled ECU and universal 30″ pigtail with varied applications targeting power sports, single cylinder all the way up to 8 cylinders with up. The MS3 and MS3X do not put out enough juice to fire the factory coils, unlike the Chevrolet Coils which have built in ignitors,. This manual covers MS3X/V3. A typical installation on a VG30E would use the following parts: $692. Injector wires are labeled, and are on the MS3x plug. by subwoofer » Thu Aug 14, 2014 5:36 pm. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. Megasquirt 3 with 3X Expander and V3 CPU. Some MS3X harnesses don't include shielded wire on their trigger input. Features in bold are added to the AMP’d MicroSquirt. Be sure to follow the guidance here to avoid common mistakes that will often lead to problems. In the idle settings I have set the frequency to 195hz. A main step in your MS3 Gold Box installation is connecting up the wiring. For input I've tried datalog in, tableswitch, and the other ground switching input that I can't recall at the moment. Would 18 gauge be alright to run from the MS. 0 Hardware Guide 2. The wiring diagram looks very nice. DIYAutoTune Wiring Harnesses MS3X-Hrn. MegaSquirt Wiring Harness - 24 inches long Completely redesigned version adds more features to help make your installation as easy and reliable as possible. You don't need that ignition module, you ve COP on your car and you need to find a way to ignite your coils with MS3X spark outputs. Sounds as if that may have been an issue with a preproduction harness - the earlier ones used MS3 wiring as we didn't have the pre-printed wiring specific to the MS3-Pro yet. 1 Wiring megasquirt tic b230 ms3x rele benzina pompaWiring ultimate ms3 pro ms3pro pinout diagram evo harness standalone megasquirt ecu engine manual downloads. The crank position input, is has the red wire from point 25 meeting the black from point 8 and then connecting to a blue and yellow wire at the pigtail. Would 18 gauge be alright to run from the MS. MegaSquirt MS3X Wiring Harness - 8 feet 8' of TXL High temp automotive grade wire. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. My questions: 1. See the MS3 manual wiring diagram for how to wire it up. 3: Wiring. MegaSquirt-I Relay Cable (if you’re using the relay board and cable, you don’t need the standard MSHarness12, see note in product description) 8′ MegaSquirt Wiring Harness for MS3X. 1. This only applies to the MS3X outputs (or on an MS3-Pro); the LED spark outputs use the same pattern as MS2/Extra so as to make it easier when upgrading from MS2 to MS3. B1 (Relay Ground for Fan) 12v Switch 5vRef Grounds Dedicated Ground MS3X Board: Inj. 1 ecu that is the vanos motor. 7. 2. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. 5 out of 5 $ 114. Last edited by jeffmarsh750 on Mon Jun 02, 2014 5:46 am, edited 1 time in total. SAYS IF HALL SENSOR. 57 board with MS3X board. RX7 Series 2 13B Turbo. This MS3x Plug and Play setup offers much more than your standard EFI control. Manual and Guide Full List. VISIT US. MS3Pro EVO Standalone Engine Management System w/ Harness. Color coded wiring with labeling printed on the wire every 6 inches — no paper. 0! Perfect for your motorcyle, snowmobile, or personal watercraft! Or control your auto trans. x. The MS3X/V3. Spark output: Going high; Spark hardware in use: MS3X spark; Dwell type: Standard dwell; MS3Pro wiring and settings. x Does not apply to other Megasquirt products. x (See the Setting Up manual for more detail on version numbers. 3. 00 MS3X357-C_BL: Assembled Megasquirt-III V3. Wire the distributor’s VR sensor to the HEI module VR inputs. Distance. I am running fully sequential fuel and spark via MS3X. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. Use the MS3X pull up jumper for the. one sensor wire is adequate. 24″ MegaSquirt Pigtail MS3X Harness $ 79. Regular price2. 1 ecu from bosch (Code 402) and have only been able to find wiring diagrams for the similar 3. I bought a de-pin tool so I can repin my DIY harness and have done it exactly as shown in the first diagram (ms3x) - with each sensor getting a ground wire. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. I have just recevied a MS3 card and in anticipation of obtaining a MS3x, after reviewing the latest MS3x wiring schematic, pin 2 is now shown as a ground. 4. Use this high quality MS3X wiring harness to take advantage of all the great features on the MS3X expansion board. 8′ MegaSquirt Wiring Harness for MS3X. x See the Setting Up manual for more detail on version numbers. 1. 99. ms3x box w/harness. I connected the "signal" grounds to the terminal where I ground all of the megasquirt grounds. MegaSquirt DIYAutotune SystemsFind Wiring Harnesses 8 ft. Build the ECU up to trigger for inverted VR output. SAYS IF HALL SENSOR. That’s it! Using the MS-I PCBv3 or V3. To pin 30, connect the 12 gauge red wire you ran all the way to the fuel pump. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . MegaSquirt MS3X Wiring Bundle – 23″ 5 out of 5 $ 29. Engine Management Systems. So i need to add in a few sensors for Oil Pressure, Fuel Pressure, 0-5v Dashpot, and wire to some specific ports for the trans brake staging and 3 step switches. 8′ MegaSquirt Wiring Harness for MS3X. 2 digital outputs. MegaSquirt wiring harness, Innovate Motorsports LC-1, and LM-1 Wideband O2 Sensor systems and gauges, and ignition. 18aw for the single wire supply is plenty big enough. Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37. Any help would be appreciated. At least that's what the wiring diagram that came with it says. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. 8′ of TXL High temp automotive grade wire. There are 3 or 4 MS side harnesses that are about 14" long, they all come from the MS3X pigtails and go to those gray multiplugs. There is a recall on us crankps and they sell a wiring harness kit with it. 3) MS3 Cam Input (Dual VR v2. The harnesses worked out great but what I noticed was that I started soldering and heat shrinking before I had all of the wires ran so I ended up having to unsolder and resolder a couple connections (Especially the Sensor_GND) a couple times and pull loom apart to add another. MS3X Cam VR wiring. Just like the MS3X harness, but with no DB37 connector. External pull up: Connect a 1K resistor between the wire on pins 24 and 26 on the main board harness. Color coded wiring with labeling printed on the wire every 6 inches — no paper tags here! Heavy duty metal DB37 hood for superior RFI/EMI shielding (no cheap plastic ‘metalized’ hoods used on our harnesses) This is the harness for the MS3X Expansion board. 2. Preassemble and Prepare The Megasquirt MS3/MS3-Pro Harnesses. Just like a short run of the MS3X harness, but with no DB37 connector. I've already searched the archives and was unable to located anything beyond 1982. The engine harness is the later 82-83 ZXt style but the distributor end with the round four-prong one-way-fit plug was cut off and the. 00. Look up crankposition sensor recall m52. MS3 Pro Plug and Play for 04-05 Mazda Miata Mazdaspeed Miata. Pull Spare Wires from Megasquirt Harnesses overall cost is a big factor to me. 99. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. Anyone onto the questions. All wiring is automotive grade and the connector hood is metal. 60. 3) MS3 Cam Input (Dual VR v2. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . Included is a MegaSquirt-III Engine Management System w/PCB3. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37 Heavy d. Would 18 gauge be alright to run from the MS. Top. I pulled the wire harness out and check all my wiring. but also more difficult because there are way more wires and sensors in the engine wiring harness to connect to, especially the US. SAYS IF HALL SENSOR. All I have are the ignition coils from the original bike. 3. . nathaninwa Super MS/Extra'er Posts: 2628 Joined: Wed Sep 15, 2004. I connected my "PWR" grounds from the LS1 coils to the engine block on a short run of wire to keep them out of the wire loom. Distance Rating. VISIT US. MegaSquirt MS3X Wiring Harness for full sequential fuel injection and ignition, as well as tons of other I/O (Dual Stage Nitrous, 2nd O2 Sensor, Boost/Launch Control, etc) This is the harness build guide for the Megasquirt MS3X. 57 with MS3X add on. James1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. the MS3X plug for sequential fuel and injection requires its own harness. 0 MicroSquirt with 30″ Harness is an entry-level, fully assembled ECU and universal 30″ pigtail with varied applications targeting power sports, single cylinder all the way up to 8 cylinders. The MS3Pro measures approximately 8. Use the MS3X pull up jumper for the. MegaSquirt Wiring Harness - 8 Feet Long We've completely redesigned our wire harness to help you get your fuel injection installation right the first time with. This terminal is also grounded to the engine block. Uploaded by Ojeda Orlando. 57, solder a 1K resistor in the R57 position. Description MegaSquirt MS3X Wiring Bundle – Length = 8′ 8′ of TXL High temp automotive grade wire. I have my Bosch 3 wire valve connected as described above with one side to Idle (pin 9) and the other side to Boost (pin 6) from the MS3X. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here! All wiring is pre-crimped (NOT solder cupped!) to the DB37 Heavy d. In this video the multiversal-timelines become intertwined, the editor screws up and shoulder pads! In all seriousness, I some wha. Share. . 99. MS3X wiring and settings. SAYS IF HALL SENSOR. 00. Ms3x Wiring Png. Connect it to pin 24 on the Megasquirt main board, or the Tach pin on the relay board. 0 is an ECU based on Megasquirt-3 technology, consisting internally of an MS3 card and an MS3X expansion card installed on a through-hole DIY V3. Wiring the engine harness to the MS harness has been pretty clear except for some uncertainties with the CKP input and what our setup is capable of. Wiring harnesses at carid. Wire gauge on the ms3 pro harness. by Dennis930 » Fri Jul 30, 2010 1:56 am. Had a question about the signal ground to MS3 (Pin B) - I assume since the coil switching is coming from the MS3X board it would be better to ground to this rather than the main board ? MS3Pro Ultimate Standalone Engine Management System w/ Harness. ) How small or large this is depends on the current flowing and the resistance of the ground wires. 8′ of TXL High temp automotive grade wire. Would 18 gauge be alright to run from the MS. 00. Connect a 0. The stock wires might work by just looping the extra length of wire-if you can picture that. Install the firmware if. To start viewing messages, select the forum that you want to visit from the. I am using a preassembled ms3x system with a 3. MegaSquirt MS3X Wiring Pigtail – Length = 24″. MegaSquirt MS3X Wiring Bundle - Length = 23" ~23" of TXL High temp automotive grade wire. Depending on your fan, this may or may not be adequate. x card will need to be able to manage a 1992 f150 4wd 351w with MAP efi? also i see diyauto tune sells wires for the ms wiring harness that is 20 gauge. jsmcortina Site Admin Posts: 39392 Joined: Mon May 03, 2004 9:34 am Location: Birmingham, UK. Add to cart. Notably, the car features a BMW E46 M3 6-speed transmission, a Thayer Motorsport upgraded Limited Slip differential, and a meticulously assembled engine. Ls1 ecm wiring diagramCommodore vy ls1 vz ecu pcm vx loom outs diagrams efi Ford wiring lincoln idmsvcs tidbits imageservice harnes2002 lincoln ls need wiring diagram for heater. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. Color coded wiring with labeling printed on the wire every 6 inches -- no paper tags here!. MegaSquirt MS3X Wiring Pigtail – Length = 24″. 5 out of 5 $ 114. MegaSquirt Relay Cable. 99 DIYAutoTune MegaSquirt MS3X Wiring Harnesses Wiring Harness, MegaSquirt MS3X , 8 ft. (Speed Density only. Full sequential COP and injection. Serving my area. SAYS IF HALL SENSOR. . 57 is an ECU based on Megasquirt-3 technology, consisting internally of an MS3 card and an MS3X expansion card installed on a surface mount V3. 00 StimPower: JimStim power supply $83. This harness connects to the lower (main board) connector, while the upper (MS3X) connector uses the MS3X harness. On to all the injectors. You can use it with OEM harnesses or wiring from other sources, and use it with any ECU. 2a. ( 7 questions) 5 out of 5 based on 6 customer ratings. But my big brain figured to follow MS3x directions and redo the wiring harness. Boscobel, WI 53805. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . 8′ of TXL High temp automotive grade wire. Color coded wiring with labeling printed on the wire every 6 inches. Color coded wiring with labeling printed on. 57 assembled kit, both harnesses,elec boost controller,iac adaptor . I pulled the wire harness out and check all my wiring. This confuses me. Wiring the engine harness to the MS harness has been pretty clear except for some uncertainties with the CKP input and what our setup is capable of. At that time pin 2 on the MS3x connector was assigned as 12 VDC. Alot of time the shield wire of the crank wiring is left untouched, but it needs to be grounded. Been working on my MS3X board for quite a while (if anyone is debating buying the kit vs the pre-built, get the pre-built). 5 out of 5 $ 114. i know i have 4 extra fuel/spark wires. Because of this, we need to replace the unshielded wire with two conductor shielded. 57 is a little. 2 Megasquirt Installation; 2. 3) MS3 Cam Input (Dual VR v2. The versatile MicroSquirt with 30″ Harness: Standalone Engine Management System, Transmission Controller or CAN I/O Expansion Module- Version 3. SAYS IF HALL SENSOR. Megasquirt 3 Wiring Help LM7 / LS1 / LS to a MS3 with MS3X (Megasquirt 3 with Expansion for sequential fuel injection). Hardware manual covering specific wiring and configuration of your Megaquirt MS3X/V30 ECU. 57 specific External pull up: Wire a 1K resistor in between pins 24 and 26 in the main board wiring harness. Beyond the Ordinary: BMW Style with a 2J Twist November 14, 2023 Read More . ,230/232 @. I have a m50 NON-Vanos motor with a Motronic 3. The recall puts it towards the bell housing. The MS3X also uses a similar VR conditioner for its cam input circuit that adjusts in the same way. MS3&MS3X v. My project is a NA TII 13b engine running the standard efi and ignition setup, the injectors are low impedance Series 4 injectors the Parts I am going to order from DIY Auto Tune are-12' MegaSquirt Wiring Harness [MSHarness12] Using the MS-III PCBv3. I have the m50 cam position sensor installed as form my understanding this is the one megasquirt can read, and I have an m44 crank sensor installed. by lastermann » Tue Dec 27, 2011 6:27 pm. 1 Best Practices. Grounds need some Clarification. 57 with MS3X, use the Spark A output on the MS3X board (pin 14). For many first-time users, it may be tempting to re-use old connectors and wiring. Add to cart. Would 18 gauge be alright to run from the MS. When I planned my harness I put in a few +12V circuits for supplying things like IAC, sensors, injectors, etc. 8′ MegaSquirt Wiring Harness for MS3X. Add to cart8′ MegaSquirt Wiring Harness for MS3X. 0 engine in my 1988 Mustang that had a 4 cylinder previously. I am able to read a signal on the wire to the harness. Note that the DIY Autotune wiring harness has a shielded wire – connect only the inner wire to this pin! Connect the E pin to MS3X pin 14 to send the timing signal to the HEI module. With this guide, no previous electronics or soldering experience is required. On the MS3X expansion board, R11 adjusts the threshold voltage, and R32 adjusts the hysteresis level. 3. $79. I have a couple questions I have some resistors to be able to run TFI as well as the ms3x card so I can easily run my PWM IAC and my A/C. 3) MS3 Cam Input (Dual VR v2. Add to cartToday's Posts; Member List; Calendar; Forum; E30 Technical Forums; General Technical; If this is your first visit, be sure to check out the FAQ by clicking the link above. I've read the MS3 manual wrt grounding and understand importance of running grounds back to MS. Wiring Harness, MegaSquirt, 8 ft. there are some other controllers that. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. 2:. 57 Hardware Guide 1: Introduction The MS3X/V3. MegaSquirt MS3X Wiring Bundle - sequential fuel injection and ignition (Dual Stage Nitrous, 2nd O2 Sensor, Boost/Launch Control, etc) 23" LongMs3 wiring diagram ms3x tracking gauge issues down help megasquirt questions grounding question miata o2 turbo fuel reply miataturbo portsWideband aem ms3 canbus pnp 2001 straightforward helpful Wiring diagram megasquirt sensor ms2 ms3 crank position harness diyautotune fc db37 ms1 switch work signal rpm problem thumbnail. 3 high current digital/pwm outputs. Connect pin 87 to a 12V connection on the fuse panel and install a 20A fuse in the corresponding slot. All you are doing is connecting the OEM plugs to the FlowForce harness. 1) MS3 Main board 15-19 grounds connected to engine block, MS3X wire harness not connected at this time. 1 Overview; 2. On to all the injectors. 6 digital inputs. MegaSquirt MS3X Wiring Bundle – Length = 23″. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. I've also tried the nitrous in. 99. Top. by 87ponygt » Wed Dec 30, 2015 3:22 pm. Yes, they are completely un-necessary,, but I use them for the above reasons. Product Details. 2) MS3 Sensor Ground PIN 7 Not connected at this time since no TPS, IAT, Coolant, O2's are connected. Description. COPs are from Toyota Highlander with 350 ohm input resistance. The MS3Pro LSX Series plug and play harness is professionally engineered and easy to install. MS3X/V3. 57 – The MegaSquirt 3 is a drop in daughter card that greatly expands the MegaSquirt’s functionality. DB37 Solder Cup Connector for MS3X $ 8. And also while cranking. On a V3. 500 Hwy 133. 1A) internally wired to MS3 Main Connector 27 IAC1B Blue/Red . MS3Pro Ultimate Standalone Engine Management System w/ Harness. ( 4 customer reviews) $ 114. 99 8' MegaSquirt Wiring Harness for MS3X Add for $ 114. Should I split the signal ground wire out of the shield before the MS3X DB37, and route it to its own dedicated pin on the main DB37. SAYS IF HALL SENSOR. Is it using it's own pattern if the cam signal is not presant. JamesMS3Pro Ultimate Configurable Inputs/ Outputs: 10 channel 4:1 or 8:2 programmable peak and hold injector outputs. If you're out of MS3X outputs, you'll have to add mods to the main board. Add to wishlist. 99. 99. 70 Subtotal without wideband . 8′ MegaSquirt Wiring Harness for MS3X. 3 high current digital/pwm outputs. Mega 5 point harness installHarness megasquirt wiring ms1 ms2 ms3 ready miata reply Custom wiring harness – customcableEverything you need. MS3x first power up, signal and wiring check. Long TXL High-temp Wire, Heavy-duty DB37 Metal Hood, RFI/EMI Shielding, for use with MS3X Expansion Board, Each Location: Sandefjord, Norway. 57 board, the ms3x wiring harness, 7mgte CPS and am getting decent cam/crank signal(not full sync yet, however I have full sync at crank and up to around 1000rpm, but that's another topic). 8′ MegaSquirt Wiring Harness for MS3X. 49 $ 6.