MS to engine harness

For discussing how to choose sensors and create a wiring harness for all Bowling and Grippo versions of the MegaSquirt® EFI controller.
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Datbeardo944
MegaSquirt Newbie
Posts: 13
Joined: Tue Apr 04, 2017 9:43 am

MS to engine harness

Post by Datbeardo944 »

Okay, so I have my Megasqurt 2 V3.0 all done and ready to go on the car (Porsche 944 S2). The car has a Bosch 55 pin style harness connector so I got the adapter from DIY autotune and I am trying to go from the DB37 to the Bosch connector. I have the Bosch's pinout, but I am not totally sire on the DB 37's. I looked online and there are so many different ways to wire things it seems like. Will somebody please point me in the right direction? :D
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trakkies
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Joined: Tue Dec 30, 2008 3:06 am
Location: SW London, UK

Re: MS to engine harness

Post by trakkies »

The basics on MS2 are pretty well all hard wired to the DB37 via the PCB. Power, tach input, injectors, TPS. CTS, ATS, etc. Choices happen for things like idle speed control. Only you know how you've configured that side of things.

If you wish a plug and play unit, where you can swap between original ECU and MS, and aren't good at reading schematics, an MS PNP may be a better option.
Dave P, London UK.
Rover V-8
MSII V3
EDIS
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Datbeardo944
MegaSquirt Newbie
Posts: 13
Joined: Tue Apr 04, 2017 9:43 am

Re: MS to engine harness

Post by Datbeardo944 »

Thank you fo your reply, I don't think I made much sense though. I am looking for what each pin on the DB37 does. like what pin 1 does, pin 2 does, and so on.

Thank you for helping me! - Chris
kjones6039
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Re: MS to engine harness

Post by kjones6039 »

Datbeardo944 wrote:Thank you fo your reply, I don't think I made much sense though. I am looking for what each pin on the DB37 does. like what pin 1 does, pin 2 does, and so on.

Thank you for helping me! - Chris
I think that most of what you're looking for (pinouts, schematics, etc) can be found in the various MS manuals.

Hope that helps....... :)

Ken
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
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