Wiring harness????

[Ryan]

Ive got a 94 Vh45 in my 91 s chassis. Currently stumped on wiring. I wouldn't be asking if I didn't already look for this info EVERYWHERE else. It appears (according to mitchell wiring diagrams) I only need 4-5 of the vh wires wired up to the s chassis to make this thing run. Here is my delima, either Im a total idiot (which is very possible) or mitchell is wrong. Only the last 3 wires on the vh ecu pinout match up with wires on the mitchell diagram showing the ecu pinout. If everything matched I could just trace the wires down through the harness starting at the computer plug and I'd be all set. Everything I can find online is either old as fuck and dead links, for another chassis, or unlabeled pictures. Can someone please point me in the right direction. I refuse to pay mazworx for something I can get figured out myself.

[imran.rashid]

the factory fsm doesnt show pinouts??

[Russell Walker]

All that old Nissan Crap usually just needs  Power/Switched Power/Fuel Pump Out/Tach Out

ECU Pin-out will help but you'll have to strip your harness back from the chassis plug to the ECU, I've done it and it sucks, but its the quickest way to figure it out.

Get Charles to get you the ECU Pinout, Nissan engine harnesses are mostly self contained that old, so just get the power wires and signal for the fuel pump and be done.

[sultan]

i've got a 94 q45 fsm in my garage if that would help, it should have wiring.

[Ryan]

I think I figured my problem out. The engine that came out of my donor car had been replaced. The car was a 94 model and the engine apears to be as well unless they replaced the chain guides with the newer version(metal). Ecu/wiring is from a pre94 VH45, the million pin ecu not the later with like 60 pins. I got the fsm for the 94+ but cant find the pre94 fsm online so Im gonna have to wait until I get to work on monday to get the ol' dusty books out and figure it out. I spent like half the day scratching my head, walked out side and pulled kickpanel off my q45 to look at the ecu and realized Im retarded and have been looking at the wrong shit all day.

[steve-0]

still need help?

[Ryan]

I think Ive got it figured out

[slamdbusa]

I did that conversion a year and a half ago.

Your going to need to put in a separate relay for the coil packs and run it to a fused battery connection.

Here are the schematics I used:

[Ryan]

awsome. I got it figured out but thank you.

[slamdbusa]

No problem