Will a 93 wiring EFI main wiring harness work in an 87. I still want to use my computer. Will it work. I have look at diagrams from t-moss. They look the same I think they will work but want to know for sure. Need to know asap cause can one for free tommorrow.
The fuel relay or something like that is under the seat and a few other small variances. Maybe try pm'ing tmoss and see for sure. I believe autozone has wiring diagrams on line. There are a few small differences but nothing major. If ur good with diagrams and do good work, u should be ok.
Already have the MAF in my 87.Also have the A9l puter.My EFI harness has been messed up by other people not knowing how to do it.Wires cut and spliced and missing.Fuel pump relay is under the seat. Already look at wiring diagram from t-moss they look the same
If the idea of moving & soldering wires scares you, here's a list of compatible Mass Air wiring harnesses. Copied From bbunt302
Just for reference, here's a list of all the compatible years:
89 harness should work for 86-89 as long as you're using mass air.
90 harness will only work in a 90. (B/c of air bags and dual dash connectors)
91 through early 92 harnesses should be compatible (single dash connector, fuel pump relay under driver's seat)
Late 92 through 93 harnesses should be compatible (single dash connector, fuel pump relay under the hood)
Computers from 89-92 are all the same. Look for the A9L sticker on the back cover for a 5 speed that matches your requirements. Example: E9ZF 12A650 AA" with the A9L code.