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-   -   HELP need ECM wiring for 1990 (https://67-72chevytrucks.com/vboard/showthread.php?t=430764)

breezy 11-13-2010 08:55 PM
HELP need ECM wiring for 1990
 
Ok I'm going to try and build my own harness from the donor truck I have. I need wiring and any advice from somebody that has done this. I was kinda overwhelmed at the wad of wires I pulled off the truck, but after looking at it I thought to myself I've had more wires on some of my stereo stuff. Can't be that hard and I'll save 400 bucks;)

68 TT 11-14-2010 01:46 AM
Re: HELP need ECM wiring for 1990
 
Quote:
Originally Posted by breezy (Post 4293397)
Ok I'm going to try and build my own harness from the donor truck I have. I need wiring and any advice from somebody that has done this. I was kinda overwhelmed at the wad of wires I pulled off the truck, but after looking at it I thought to myself I've had more wires on some of my stereo stuff. Can't be that hard and I'll save 400 bucks;)
Auto Zone has many of the wiring diagrams you need on their web site in the repair guides area. Just put in the model of your donor and look for the right diagrams in the list.

dave69 11-14-2010 01:59 AM
Re: HELP need ECM wiring for 1990
 
Quote:
Originally Posted by breezy (Post 4293397)
Ok I'm going to try and build my own harness from the donor truck I have. I need wiring and any advice from somebody that has done this. I was kinda overwhelmed at the wad of wires I pulled off the truck, but after looking at it I thought to myself I've had more wires on some of my stereo stuff. Can't be that hard and I'll save 400 bucks;)
I just did my wire harness from a 96 vette LT4 that I swap to my 69 and I got a lot of info and wire diagrams and ECM pin outs on LT1swap.com just take your time and follow the diagrams. Mine worked out great. What do you have?

breezy 11-14-2010 02:11 AM
Re: HELP need ECM wiring for 1990
 
383 tbi/700r4


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