89 gm factory harness to ms2

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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hotrodk5
MegaSquirt Newbie
Posts: 3
Joined: Sun Mar 27, 2011 7:05 am

89 gm factory harness to ms2

Post by hotrodk5 »

89 gm k5 blazer tbi. ms2 to factory wiring harness no relay borad is this posiable if so how and is their a diagram somewhere just got ms2 to day looking for install options. found all pinouts for sensors cant find out how to make starter relay work thankes for the help
Matt Cramer
Super Squirter
Posts: 2951
Joined: Sat Jul 03, 2004 11:35 am

Re: 89 gm factory harness to ms2

Post by Matt Cramer »

Mark's adapter board makes this pretty straightforward:

http://www.DIYAutoTune.com/tech_article ... _board.htm
hotrodk5
MegaSquirt Newbie
Posts: 3
Joined: Sun Mar 27, 2011 7:05 am

Re: 89 gm factory harness to ms2

Post by hotrodk5 »

DIYBOB delphi 56 will it come with all the hardwear just needing assebled? lookes like what im needing or do i still need to git resistors rlays ect
Matt Cramer
Super Squirter
Posts: 2951
Joined: Sat Jul 03, 2004 11:35 am

Re: 89 gm factory harness to ms2

Post by Matt Cramer »

That will work too, although for TBI injectors we also recommend using injector resistors as the TBI injectors draw a lot of current. You'd also need a cable to connect the DIYPNP to your laptop, and it's a good idea to add an IAT sensor, but that's about it.
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