I want to put a direct wire on/off switch on my A/C compressor because it doesnt work with my PFC. Anyone have a link to how to do this?

 

That wouldn't be very difficult but you might take a look at the powerfc section, there are some solutions to the problem.

If you still want to directly power it though, there is a single wire coming out of the compressor which just needs to be switched to +12v to activate the clutch.

 

That sounds easy enough.

 

I remember F-ing around with the PFC years ago and i wasnt able to get it.

Yeah I thought it wasnt too hard. Anyone wanna link me a picture or wiring diagram since I'm lazy?

 

Yep

Now I just have to find some tubing.

 

PM "Books"

 

k

 

You can bypass the PFC right at the ECU by cutting 2 wires and jumping them together. This is the best way to do it as it retains use of the dash AC button.

I dont remember which wires to connect, but that is the write-up you should look for.

 

This sounds good. Does anyone remember where they found it?

 

I would not bypass the thermoswitch or the pressure switch. Attaching the switch before the thermoswitch would be safer. The Body Electrical manual in the stickies has a wiring diagram,

 

If your compressor does not kick in that could be 4 thing wrong according to the shop manual, however at the compressor should always have constant 12v, I just found my issues tonite why my compressor does turn when I puh the a.c button on the dash. I trace the wire from the compressor to the AC relay box and it's the blue/black wire that send volts to the compressor but first it goes to the pressure switch connector and then the red/black send volts to the compressor. Mostly like you probably have a broken wire somewhere there to the connector pressure switch.
Khris

 

look in the power fc forum section. There is a relay mod that ou can do that allows the PFC to control the a/c. I know it works cause I did that mod and my a/c worked great until my thermosensor crapped out.

 

dont bypass the pressure switch

 

care to link it up, i just searched that section and couldn't find anything

 

http://catfivemotorsports.com/power_fc_a.htm

 

which Bosch relay do i need?

 

any standard bosch 5 pin relay. one of the pins however are not going to be used. I have the relay number at work. I'll get the number when I go to work today.

 

how many amps etc. ?

 

Not so sure about that. That would make the compressor run constantly.

 

I wouldn't worry about the amperage of the relay. Reason being that it doesn't control voltage. It is controlling the ground side of the circuit.

 

Just do the Bosch relay fix. It takes about an hour (or less if you know what you are doing) and works. No ifs, ands, or buts, it simply works like it did when new!

 

just need to know which type to buy and where from, radioshack sells automotive relays >_<

 

still wondering about this relay

 

How many amps is the A/C circuit fuse? Go with that and you wont have anything to worry about.

 

I used this relay I found on ebay for $3.99. The thing I like about it is that it comes with the plug which makes wiring and soldering a snap, then you just plug in the relay!
--Jeff