I'm currently trying to do a swap, ran into bad luck everywhere. 1 I had a 1989 supra 7mge... Had a rod knock so I sat it and was gonna pull and fix, grandmother got sick so I had to rush her to the hospital and on my way to go back home it blew. I recently bought a FULL motor swap from a 1987 supra. I was wondering if the 87 harness would run ok in the 89....
Will a 1987 7mgte wire harness, motor, and trans fit into a 1989 supra shell?
- Thread starter Kyle Hartman
- Start date
My only worry is where the plugs in the dash will meet to the ecu... I've heard there are a difference between 86.5-87 and 89-92. Sorry if this topic has been posted before btw. I tried to seach everywhere but no luck on answers
There are differences in the 86.5-88 and 89-92. 89-92 used grey plugs while the previous years used yellow plugs. If you are trying to use an 87 harness with an 89 ecu, I can tell you now its not going to work. Your best bet is to use a harness that came from your year model supra.
The engine harness for the 86.5-88 is different from the 89 which is different from the 90 which is different from the 90-92. The chassis plugs under the dash are different for all those years and there was a change in the main power plug in the engine bay from 90 to 91 IIRC. The ecu plugs are the same on 86.5-88 and on the 89-92 as described above with the earlier years being yellow plugs and the later models having grey ecu plugs. I also believe there are some sensor plug differences between pre and post 89 models.
I'll just buy a shell I found locally. Turns out it is the same year as the motor I bought lol. Then I can save my shell for a big build instead of something to just run for a daily