orange wire on Heat/AC Selector - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TLoz · 02-16-2010, 03:23 PM

I've got a 1977 burb. Finally getting around to installing the wiring harness and A/C stuff. The vacuum selector attached to the heater/AC panel has a orange wire running to nowhere. It's even shown like that in the wiring diagram. Any ideas where this goes, if anywhere? Many thanks, Tom

fixit-p · 02-16-2010, 06:13 PM

What diagram are you looking at, can you post it? Orange usually is used for high speed resistor bypass and blower motor feed wire.

TLoz · 02-16-2010, 08:27 PM

Fixit,
It's a 1977 wiring diagram. The little square box in the corner calls out Air Conditioning, RPO C-60. The selector switch is just above the title box. It shows a 16 ORN with a P/N 2962793 connector going to nowhere. Thanks, Tom

TLoz · 02-19-2010, 01:27 PM

Just found out that that orange wire is for the "recirculation over ride switch" Don't know what that is, where it hooks up or what it does. I assume that it's a power wire, since it's orange. Going to leave it alone for now. Having trouble with the fuse blowing when I put the fan on high. Changed out the switch with another used one and it doesn't even work on high. Ordered a new switch from Classic yesterday. Hopefully that will fix the problem.

02-16-2010, 03:23 PM	#1
TLoz Registered User Join Date: Dec 2003 Location: Indy Posts: 326	orange wire on Heat/AC Selector I've got a 1977 burb. Finally getting around to installing the wiring harness and A/C stuff. The vacuum selector attached to the heater/AC panel has a orange wire running to nowhere. It's even shown like that in the wiring diagram. Any ideas where this goes, if anywhere? Many thanks, Tom

02-16-2010, 08:27 PM	#3
TLoz Registered User Join Date: Dec 2003 Location: Indy Posts: 326	Re: orange wire on Heat/AC Selector Fixit, It's a 1977 wiring diagram. The little square box in the corner calls out Air Conditioning, RPO C-60. The selector switch is just above the title box. It shows a 16 ORN with a P/N 2962793 connector going to nowhere. Thanks, Tom

02-19-2010, 01:27 PM	#4
TLoz Registered User Join Date: Dec 2003 Location: Indy Posts: 326	Re: orange wire on Heat/AC Selector Just found out that that orange wire is for the "recirculation over ride switch" Don't know what that is, where it hooks up or what it does. I assume that it's a power wire, since it's orange. Going to leave it alone for now. Having trouble with the fuse blowing when I put the fan on high. Changed out the switch with another used one and it doesn't even work on high. Ordered a new switch from Classic yesterday. Hopefully that will fix the problem.



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