I know there are many threads like this, but the more I read the more I'm confused. I already read through the stickies, but my setup is somewhat unique. I have a 93 FD with a GTO ls2, however I'm using the ls1 fbody PCM so I can retain good AC control, and Greg set the harness up to this combo(actually he recommended it). Keeping a throttle cable is nice too. So Here are some photo's below, I'll list out what I'm having trouble with, if you can please chime in as I know PEZ is always busy.
Switched power= Where is the best/easiest place to get that from? I know the pdf wiring guide says the black/white wire under the steering column, but there are like 3 black/white wires there. Does anyone have a picture? Also I heard there is a switched 12v in the x-14 connector, can I use that wire to supply the ECU correctly? Or do you need a thicker wire?
A/C request wire=I just have one wire that says AC REQ, where should I hook this too? I'm assuming it is where the button on the dash goes to to signal on the compressor clutch.
Temp= This is a yellow wire that exits the harness further toward the engine bay than the others. I am using the factory mazda sensor and the GTO sensor, but where does this wire go? It looks like I have plugs in my harness for two ls2 coolant sensors(not sure if the coolant shares a plug design with something else) so it is confusing. The wire I'm going to hook into the rx7 harness is the mazda unit signal right?
PUMP=I'm assuming the fuel pump signal wire, should I run this all the way back to the fuel pump relay or can I connect it to the factory signal wire under the dash and use the factory wire at the sending unit plug as the signal?
Speedo=There isn't a wire labeled speedo in this harness. There is an unlabeled green/white wire next to AC req and fuel pump signal(also green/white), think that could be it?
KEY ON=does this go to the starter lug? It comes out right next to the starter wire. If so where does the PCM get it's 12v key on signal from?
Starter= I get that this should be on the starter signal lug, but what is the KEY ON for?
OIL PRESS= I am using the factory mazda oil pressure sender for the gauge in the dash, what would this wire be for? Does the ECU need the factory oil pressure sensor? I have an aftermarket gauge for pressure and the dash gauge. Where should I hook this to?
I know I'm a noob, but I'm getting real close to having this car running.