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06-24-2014, 11:28 AM
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Registered User
Join Date: Sep 2012
Location: Columbia, SC
Posts: 549
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Aftermarket AC in factory AC 71
Hey guys I believe the switch is out on my AC on my 71 GMC. It was a factory air truck but I believe the PO switched it out. It was working fine until the fan speed switch got hard to turn on/change speed. While checking connections on the switch it did spark (while running). While looking for the relay/resistors mentioned in other ac posts I found some discrepancies to original and would like some help IDing what I have. The relay seems to be relocated next to the fuse box, and there is a knob on the heater box that I don't know the function of. Thanks!
compressor: under hood: heater box knob-what is this?: heater box:
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Life is too long to go slow...  71 GMC 1500 Super Custom LWB 350/350 AC(replaced w/vintage air)/PS/PB 2.5 CPP Spindle, 1" CPP Drop Spring, CPP Front and Rear Sway Bars/DJM Flip, new General Spring KC 5 spring pack, HEI /IntReg Alt 20x8.5 OldSkools 5" BS, 275/45 Falkens |
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