Question for guys with factory A/C - The 1947 - Present Chevrolet & GMC Truck Message Board Network

yellow70GMC · 01-14-2010, 09:22 PM

This is a picture of some type of relay, i know it mounts somewhere in the vicinity of the heater box on the passenger side inside the cab, but i forgot where. It also has a ground wire that i'm guessing needs to be screwed to something metal? Any pictures of where it mounts, or advice would be GREATLY appreciated. It's been 3 1/2 years since i took my system apart, and i'm just now putting it back together. Needless to say, i'm having a hard time remembering some stuff haha

Thanks for looking guys!!

**70cst** · 01-14-2010, 09:46 PM

TTT....till you get help yellow70GMC

Longhorn Man · 01-14-2010, 09:49 PM

under the dash, between the heater box and kick panel, up kinda high. They mounted them with the plugs facing up, I say mount it upside down so if any water gets on it (leaking cowl and windshield are common)water sheds off instead of collecting in the recessed area.

yellow70GMC · 01-14-2010, 10:29 PM

Thanks longhornman, i'll go give that a try. Good idea on mounting it upside down. I hope nothing leaks though, i have a brand new windshield, windshield seal, and i replaced the flap thing in the cowl too.

yellow70GMC · 01-14-2010, 10:50 PM

Figured it out, thanks 70cst and longhorn man. Should have been obvious, i was looking in the wrong places haha. While i'm at it, could anyone tell me which cable goes where? Pictures maybe?

Hutch · 01-14-2010, 11:48 PM

yellow70GMC

Be sure that the ground lug is attached to a good ground otherwise you fan will not work on the high speed.

01-14-2010, 09:22 PM	#1
yellow70GMC Registered User Join Date: Sep 2005 Location: Reno, NV Posts: 161	Question for guys with factory A/C This is a picture of some type of relay, i know it mounts somewhere in the vicinity of the heater box on the passenger side inside the cab, but i forgot where. It also has a ground wire that i'm guessing needs to be screwed to something metal? Any pictures of where it mounts, or advice would be GREATLY appreciated. It's been 3 1/2 years since i took my system apart, and i'm just now putting it back together. Needless to say, i'm having a hard time remembering some stuff haha Thanks for looking guys!!

01-14-2010, 09:46 PM	#2
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,365	Re: Question for guys with factory A/C TTT....till you get help yellow70GMC __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

01-14-2010, 09:49 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Question for guys with factory A/C under the dash, between the heater box and kick panel, up kinda high. They mounted them with the plugs facing up, I say mount it upside down so if any water gets on it (leaking cowl and windshield are common)water sheds off instead of collecting in the recessed area.

01-14-2010, 10:29 PM	#4
yellow70GMC Registered User Join Date: Sep 2005 Location: Reno, NV Posts: 161	Re: Question for guys with factory A/C Thanks longhornman, i'll go give that a try. Good idea on mounting it upside down. I hope nothing leaks though, i have a brand new windshield, windshield seal, and i replaced the flap thing in the cowl too.

01-14-2010, 10:50 PM	#5
yellow70GMC Registered User Join Date: Sep 2005 Location: Reno, NV Posts: 161	Re: Question for guys with factory A/C Figured it out, thanks 70cst and longhorn man. Should have been obvious, i was looking in the wrong places haha. While i'm at it, could anyone tell me which cable goes where? Pictures maybe?

01-14-2010, 11:48 PM	#6
Hutch Registered User Join Date: Oct 2001 Location: Grapevine, Tx. Posts: 2,142	Re: Question for guys with factory A/C yellow70GMC Be sure that the ground lug is attached to a good ground otherwise you fan will not work on the high speed. __________________ John Hutchison Grapevine,Texas 68 1/2 t swb 68 Mustang 69 Jaguar 71 1/2 t swb 88 Supra CompTs6m 93 Escort GT 2005 Corolla XRS



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