I need a pic showing how the engine harness runs in the '90-92 3.1 cars. When installed in my 87, it seems as though the harness is too long in one area (engine side of the heater box) and too short in another (between the heater box and the piece running to behind the pass side headlight for the fusible links, rad fan, ECM/fuel pump constant power fuse, etc). The donor car was a wrecked 91 that already had the non-a/c heater box removed (another thing, I have the A/C box... the only part of the A/C left in my car is the evaporator and that side of the box).

A couple nice pics would do, or, even better, a factory wiring harness routing diagram from a 90-92 FSM (either harness routing/connector location section or engine harness section).

:edit: BTW, anyone know where to get those clip things that hold the harnesses in place? About 2/3 of mine are broke and I'm stuck using either twist ties or zip ties to hold the harnesses where they're supposed to be.

 

Here is mine. If you need more I will be more than happy to take more in the morning. Hope this helps

 

Is your EST bypass that connector next to the MAP sensor there? I would have thought it would be a little closer to the ECM like it is on my 87 (at the top of the heater box). I've got mine pulled and tugged into place at the moment and it seems to be where it should be. I guess I'm just not used to the extra length coming out of the hole on the pass side where the harness runs down to the pass-through. I still need to get some fusible link wire for that junction block on the passenger's side, and I guess I'll have to nab the battery cables the next time I'm at the yard as well as the wiper motor.

:edit: I still have yet to figure out why it seems that these cars were designed around the powertrains and the wiring seems to have almost been an afterthought, just thrown in there for kicks.

 

I believe the EST bypass is next to the MAP sensor; I found a thread about the location of the EST and it looks like 91-92 (all models) have similar wiring harness. The 92 Service manual does not show me where the EST nor is it even in the book.