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chevydog66 · 08-20-2013, 10:52 PM

I have the POA update valve for R134 on my 72 GMC with 6.0 ls dbc. Sanden 508 compressor, but the rest of the hardware is original style for the truck. Do I need to install a trinary switch? If so where?

08-20-2013, 10:52 PM	#3
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Re: Cycling a/c or not? I have the POA update valve for R134 on my 72 GMC with 6.0 ls dbc. Sanden 508 compressor, but the rest of the hardware is original style for the truck. Do I need to install a trinary switch? If so where? __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up