Gunnarson Posted August 27, 2022 Report Share Posted August 27, 2022 Not entirely sure if this forum is still active, but I recently picked up an '88 wiring harness to toss into my '87 and I got it and am entirely too confused on where to start. Electrical stuff doesn't really click for me, but I'm trying to figure out what connector goes to what and where to start. I can't find any diagrams labelling it so this might be a shot in the dark, but any help is greatly appreciated. Quote Link to comment Share on other sites More sharing options...
Caliber308 Posted August 27, 2022 Report Share Posted August 27, 2022 You can find info on the 1988 wiring harness by looking in the 1988 fsm. Here is where you can find it: www.starquestgarage.com Quote Link to comment Share on other sites More sharing options...
tux Posted August 27, 2022 Report Share Posted August 27, 2022 1 hour ago, Gunnarson said: Not entirely sure if this forum is still active, but I recently picked up an '88 wiring harness to toss into my '87 and I got it and am entirely too confused on where to start. Electrical stuff doesn't really click for me, but I'm trying to figure out what connector goes to what and where to start. I can't find any diagrams labelling it so this might be a shot in the dark, but any help is greatly appreciated. You working on engine or accessory harness? Quote Link to comment Share on other sites More sharing options...
Caliber308 Posted August 27, 2022 Report Share Posted August 27, 2022 (edited) Go here: www.starquestgarage .com Click on service manuals, then click on 1988. Click on electrical 26. Then go to section 8 pages 32 to 44, that covers all the wiring harnesses in the car. Edited August 27, 2022 by Caliber308 Quote Link to comment Share on other sites More sharing options...
Gunnarson Posted August 27, 2022 Author Report Share Posted August 27, 2022 2 hours ago, tux said: You working on engine or accessory harness? I'm not a 100% sure, I do know that its the one that the ECU attaches to 😅 Quote Link to comment Share on other sites More sharing options...
Caliber308 Posted August 27, 2022 Report Share Posted August 27, 2022 (edited) 22 minutes ago, Gunnarson said: I'm not a 100% sure, I do know that its the one that the ECU attaches to 😅 There are two connectors that plug into the ECU itself: B-37 and B-36. Edited August 27, 2022 by Caliber308 Quote Link to comment Share on other sites More sharing options...
tux Posted August 28, 2022 Report Share Posted August 28, 2022 4 hours ago, Gunnarson said: I'm not a 100% sure, I do know that its the one that the ECU attaches to 😅 Ok so it's engine harness, not too bad. If you can slip the two connectors for the ECU through the passenger fender first into the cabin, the rest of it should be pretty easy to route out correctly to the various sensors/devices. Quote Link to comment Share on other sites More sharing options...
Gunnarson Posted August 28, 2022 Author Report Share Posted August 28, 2022 3 hours ago, tux said: Ok so it's engine harness, not too bad. If you can slip the two connectors for the ECU through the passenger fender first into the cabin, the rest of it should be pretty easy to route out correctly to the various sensors/devices. I should be able to put it through into the glove box and then work from there right? I'm super new to the whole "working on cars" thing right now, as this is the first real project I'm diving into and found an 87 that was pretty gutted for the racetrack Quote Link to comment Share on other sites More sharing options...
tux Posted August 29, 2022 Report Share Posted August 29, 2022 I mean, not really the glovebox. You gotta go through the hole along the fender to passenger kick panel Quote Link to comment Share on other sites More sharing options...
Turbo Cary Posted August 29, 2022 Report Share Posted August 29, 2022 If you're gonna swap the harness you might want to consider doing a few things to the harness first 1.) Remove all the old wire loom and install fresh loom/tape 2.) Remove any unnecessary wires for things you aren't going to use (purge valve, EGR, etc) by unpinning the specific component wires at the ECU connectors and deleting them from the harness. 3.) Check all the wiring for breaks, damaged insulation, good splices (if the components share circuits) 4.) Use a long coat hanger to pull the harness from the engine bay into the cabin while having an assistant help feed the harness through. 5.) Check all grounds for corrosion and add some solder to the crimps between the wires and eyelets Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.