69 sb a/c - Team Camaro Tech
Heating & Cooling Heating, cooling and air conditioning

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post #1 of 4 (permalink) Old Jun 13th, 07, 04:08 PM Thread Starter
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Join Date: Mar 2007
Location: ny/fl
Posts: 337
69 sb a/c

First of all, Im getting an AIM manual and I appreciate the info and agree on how important that is for wiring etc. Meanwhile, Im trying to figure out my original ac wiring and operation of the switches and cables. My situation is that I have mostly original system but previous owner wired the compressor to a toggle switch under the dash then into the ignition/fuse panel. I want to return this to its correct functioning via the dash controls so Im wondering about the operation of the circuit in its original form. I have my heater box out and dash dangling from a string so I can see everything easily. My guess is that the fan should turn on the a/c if the levers are in the correct position to engage the compressor? My question is: Is there supposed to be a green wire going through the plastic firewall gutter from the far lower, pass side of the suitcase ( thermal switch?) to the compressor? Previous owner cut the green wire before the firewall so I dont know where its supposed to go. Currently the green compressor wire goes from the compressor to the un-original toggle switch. I was wondering where the correct wire goes from the compressor in an original setup and whether or not its simply the same green wire that has to be connected. ( probably not that lucky?) Sorry if this sounds confusing. On the bright side I got my leaky heater core out today. Fun job lol!
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post #2 of 4 (permalink) Old Jun 13th, 07, 04:40 PM
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Location: Shrewsbury, MA, USA
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Re: 69 sb a/c

The green wire does run from the clutch on the compressor to the low temperature cutout switch on the side of the A/C suit case, then atan wire runs thru the big grommet in the fire wall to the A/C damper switch (attached to the left most control lever on the dash) and then to the lo blow fan switch (which sits on the lower left corner of the dash control panel -contact closed in either norm or max, open in vent) and from there to the A/C power fuse.

My guess is he had an issue with the lo blow switch (I have) and couldn't get power to the clutch, so he just bypassed everything and ran power straight to the clutch thru that switch.

Mark Canning
1969 Indy Pace Car
350/300HP RPO Z11

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post #3 of 4 (permalink) Old Jun 13th, 07, 05:16 PM Thread Starter
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Location: ny/fl
Posts: 337
Re: 69 sb a/c

Thanks a lot for the info. You say you have had a problem with the lo fan switch powering the compressor. I was wondering how or if you fixed it. When I get a chance I'll connect the green wire from the compressor to the cut off green wire near the suitcase and see if the compressor turns on when I hit the lo fan. I noticed by plastic terminal going into the top of the heater box is a little melted looking. I guess it may have shorted out there or something so he bypassed to a toggle. Does anyone know if that switch on top of the heater box is sold anywhere?
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post #4 of 4 (permalink) Old Jun 13th, 07, 06:45 PM
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Location: Central Minnesota
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Re: 69 sb a/c

rob here is the slider switch that you guys are talking about.

Click..is Jim..former owner of a 69RS-LM1 350/255 - 700r
"There will come a time when you believe everything is finished,
That will be the beginning." Louis L'Amour
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