Ok basically I removed a dealer installed A/C system from my 83 about 4 years ago. I've decided I want to reinstall the system and worked on that this weekend. I have everything back in except the wiring, I can't figure out where two wires go. I'm hoping someone with a 83 (or earlier) will be able to help me out.
I'm usually pretty good with wiring diagrams, but they are just confusing me more in this case.
Basicaly I have two harness at this point. One is connected to the body harness (right where the harness comes out into the engine bay) which is in turn to the low pressure switch, the compressor, and the relay near the clutch master cylinder.
On the evaporator there is the frost sensor, thats connected, the A/C switch is connected, and two bullet connectors go to the body harness near the blower motor. I'm left with two bullet connectors (the ones that go through the firewall near the A/C lines) and I can't figure out where they go to. All I can remember is that they were connected to a set of wires taht were tied to the high pressure hose, and worked their way towards the driver side. After that I'm drawing a blank.
I'm hoping someone can tell me where they go, or get some pics of their system so I can figure it out. You'd think out of all the pics I have I'd have something, but no....
Thanks in advance
Sean

 

Oh yea, the colors of those two wires are yellow w/red tracer, and a blue w/black tracer, and I don't think its clear in my first post, I no longer have the "harness" that these two plugged into, so I'm not sure where it ended, and what kind of connector is on the other end. I'm very confused b/c there are basically no unused plugs in my engine bay..... Very strange.

 

This is my 85, yours may be the same?

 

The relay looks different than yours, but the wiring should be similar... I'll have to take a picture of my harness tomorrow, it makes sense that those 2 wires would splice into it somewhere but there aren't any plugs for them to do so... It's really strange.
So on your harness the yellow wire from the frost sensor goes into the relay, and the black/blue wire goes out to the low pressure sensor on the drier?

 

Anyone with a S1/S2 that can take a pic of the a/c wiring for me? This has me feeling really dumb right now....

 

I can take a pic of mine if that'd help. You just have to tell me what you need to see.

 

Basically i just need a pic showing where the two wires that go through the firewall (near the a/c lines on passenger side) go to. I don't have that part of the harness anymore and can't figure out where those two wires end up. Thanks man

 

The first pic shows the two wires coming out of the firewall and the second pic shows the relay they connect to near the clutch master cylinder.

 

Thanks for the pics, so far both the setups shown in this thread are different than mine.... There isn't anywhere on that relay for those wires to attach to, I'll try to get some pics up here tomorrow of what I'm working with, maybe that will help...

 

if you have removed the rats nest two of your wires run into it
dont know if im right but thats how mines wired

 

those two wires you are describing are for the a/c solenoid valve. the connector is white and the solenoid is the last one on the rack closest to the firewall.

 

Hmm, that would make sense. I still have the full rats nest there including that solenoid, and its plugged into the engine harness. Are you guys saying those two wires will plug into that harness somewhere? I figured that the A/C to body harness connection would take care of activacting that solenoid.... I'll have to take a look at my engine harness, maybe there is something I'm missing...

 

Ok I took a few pics of what I've got going on. First one shows the A/C Harness plugging into the body harness in the engine bay. Second shows The A/C relay, and the wiring going to the compressor. Third shows The wires that would go out to the low pressure switch on the drier. Finally the last pic shows where two of the wires from the frost switch connect to the dash harness, and the two wires left over are hanging down, these are the wires I cannot figure out... They must connect to either the engine or body harness somewhere since there are no plugs or unused wires on the A/C harness itself...
Does anyone else have a A/C system with the wiring harness that looks like mine?

 

There doesn't seem to be a black stripe on either wire going to the low/hi pressure switch. The blue w/black stripe wire comes out of the relay and goes to a connector(bottom of first pic I posted).

 

Is it the wires hanging by the blower that you are trying to connect,
or in the engine compartment?

 

Yeah, the two wires hanging near the blower are the ones in question, I haven't fed them through the firewall yet.
I'm starting to think I should just make my own harness for this, might be easier than trying to figure out these myserious wires LOL