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**Palf70Step** · 07-07-2018, 08:17 AM

This may help. This is my 81 and I think it is pretty much the same fro the 73-87. Anyways, on mine the two lines are actually different diameter fittings so they only went on one way. But the upper one goes to the compressor and the lower line from the condenser goes back to the evaporator.

07-07-2018, 08:17 AM	#3
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,697	Re: 1974 C10 A/C Hardline Routing This may help. This is my 81 and I think it is pretty much the same fro the 73-87. Anyways, on mine the two lines are actually different diameter fittings so they only went on one way. But the upper one goes to the compressor and the lower line from the condenser goes back to the evaporator. Attached Images __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!