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Old 11-16-2009, 02:08 PM
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camaro heater wiring

I'm trying to wire my 71 camaro for heat. Some genius cut the wires at the firewall. I have an ac delete box. I still have the resistor that was on the ac box and I bought a new relay. I just need help with what wires to hook to the relay and do I have to have the resistor since I don't want to cut a hole in the ac delete box. Everything from the switch to the firewall is there so I should be able to get the colors from the wiring fairly easy.

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Old 11-17-2009, 08:33 AM
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Can't help with the colour codes of what goes to the relay, but you will need to keep the resistor around if you want the low & medium fan speeds. The dash switch chooses different 'coils' of the wire-wound resistors for the speeds, on high it's a full 12V to the blower motor. That may be where the relay comes in but I can't say for sure.
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Old 11-17-2009, 09:40 AM
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camaro heater wiring

tell me what color the cut wires are, I have a an ancient and valuable motors vac and wiring diagram book and may be able to help. Also give me the specifics of you set up A/c car? what are you working with.
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Old 11-17-2009, 10:08 AM
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camaro heater wiring

looked at the diagram relay has 16 gauge(small orange) and 12 gauge large orange plus a 12 gauge purple to the tee or group of three terminals 16 gauge black goes to the single post (tee upside down) black terminal is at top by itself then first terminal is heavy orange left term is smaller orange right term is heavy purple. The blower motor should have a single heavy purple wire to it with a rubber boot end there should also be a black case ground wire. blower motor resistor should have 16 gauge yellow 16 gauge lt blue, purple and an 18 gauge lt green. let me know if this helps.
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Old 11-17-2009, 10:10 AM
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is your relay bolted to the firewall???
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Old 11-17-2009, 10:12 AM
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if you send me an email I can shoot you a scan of the diagram I have it is for a 69 but should be the same through 72. It is the same as my olds so I think it is standard throughout gm land
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Old 11-17-2009, 10:30 AM
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HERE is a PDF of the 1970 Camaro wiring diagram.

Also, take a look HERE for some diagrams. Not necessarily your year, but other years will be similar. Let me know if you are unable to enlarge them.

The forum there has a lot of good info as well.

Last edited by cobalt327; 11-17-2009 at 10:46 AM.
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