more wiring ?'s - The 1947 - Present Chevrolet & GMC Truck Message Board Network

matthufham · 11-24-2005, 05:14 PM

ok so i got all the wiring done, except this little bundle. so far nothing is leading to the a/c compressor, and i thought this might be it, but it seems too short to run over to the passenger side. it has been cut, but this seems way too short. i got a red thick wire for power, a black for a ground, a blue possibly for remote, and a brown with a white stripe, which splits between 2 bundles. inside on the firewall the bundle goes to a relay. anybody know off the top of their head where these go? thanks

67-72williso · 11-24-2005, 07:08 PM

What year truck is it?
Later Willis

**john** · 11-24-2005, 07:13 PM

Looks like voltage reg. wires with plug cut off. Do you have internal regulated Alt?

matthufham · 11-24-2005, 09:13 PM

Quote:

Originally Posted by 67-72williso

What year truck is it?

the 72 decribed in my sig

Quote:

Originally Posted by john

Looks like voltage reg. wires with plug cut off. Do you have internal regulated Alt?

that bundle has 3 wires, and an extra one that has been cut for my internal 1 wire alt. this is a different bundle

**FRENCHBLUE72** · 11-25-2005, 10:31 AM

Before I rewired my truck I had those wires bunded up and taped to the brake support rod on the fire wall...

matthufham · 11-25-2005, 12:03 PM

Quote:

Originally Posted by FRENCHBLUE72

Before I rewired my truck I had those wires bunded up and taped to the brake support rod on the fire wall...

where did you put them in the end? did anybody ever tear out the a/c?

**pjmoreland** · 11-28-2005, 01:15 AM

My '72 had those wires. I'm pretty sure they connect to a solenoid on the carburetor and a switch on the transmission. The solenoid raises the idle speed when coasting down the road. It's supposed to be some sort of emissions control. There should be a relay mounted on the inside of your firewall near your horn relay that connects to the wires. I removed the relay and the wires and ran a cruise control harness through the firewall hole.

There should be a single green wire for your A/C pump clutch that runs through the firewall over on the passenger side. The connector on the end of the green wire should have two terminals. The second terminal has a black ground wire coming out of it that gets mounted to the A/C pump bracket. There should be what looks like a diode to me connecting the two terminals of the connector.

I tried replying to this thread earlier this week, but we were at my parents' house for Thanksgiving and my dad's Mac wouldn't let me reply for some strange reason.

matthufham · 11-28-2005, 11:14 PM

hey thanks, that's what i was waiting for. i actually found that green wire youwere talking about yesterday, or the day before, i had it wrapped around the firewall, laying on the cab floor so i didn't see it. i'm leaving those wires off for now, i should recieve a factory assembly manual and shop manual in the mail tomorrow, hopefully i'll get some good diagrams. thanks

**pjmoreland** · 11-29-2005, 01:34 AM

I have a schematic that shows the carb solenoid wiring. If your manuals don't show it, I can scan the schematic for you.

sneakysnake · 11-29-2005, 12:15 PM

A little insight on the AC

matthufham · 11-29-2005, 12:32 PM

wow that's nice, where'd you get that?

sneakysnake · 11-29-2005, 01:03 PM

You play on here long enough, you can find anything you want to know about these trucks.

11-24-2005, 05:14 PM	#1
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	more wiring ?'s ok so i got all the wiring done, except this little bundle. so far nothing is leading to the a/c compressor, and i thought this might be it, but it seems too short to run over to the passenger side. it has been cut, but this seems way too short. i got a red thick wire for power, a black for a ground, a blue possibly for remote, and a brown with a white stripe, which splits between 2 bundles. inside on the firewall the bundle goes to a relay. anybody know off the top of their head where these go? thanks Attached Images Last edited by matthufham; 11-24-2005 at 05:15 PM.

11-24-2005, 07:08 PM	#2
67-72williso Junk/Daily Driver Club Join Date: Feb 2004 Location: Manheim, PA 17545 Posts: 253	Re: more wiring ?'s What year truck is it? Later Willis __________________ Daily Driver: 1970 C-20 400 sbc,sm-465,Dana 61 one ton SRW rear, 3.07 gears, locker. There are three kinds of people: those who make things happen, those who watch things happen, and those who have no idea what happened!

11-24-2005, 07:13 PM	#3
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: more wiring ?'s Looks like voltage reg. wires with plug cut off. Do you have internal regulated Alt? __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

11-25-2005, 10:31 AM	#5
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,608	Re: more wiring ?'s Before I rewired my truck I had those wires bunded up and taped to the brake support rod on the fire wall... __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

11-28-2005, 01:15 AM	#7
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,638	Re: more wiring ?'s My '72 had those wires. I'm pretty sure they connect to a solenoid on the carburetor and a switch on the transmission. The solenoid raises the idle speed when coasting down the road. It's supposed to be some sort of emissions control. There should be a relay mounted on the inside of your firewall near your horn relay that connects to the wires. I removed the relay and the wires and ran a cruise control harness through the firewall hole. There should be a single green wire for your A/C pump clutch that runs through the firewall over on the passenger side. The connector on the end of the green wire should have two terminals. The second terminal has a black ground wire coming out of it that gets mounted to the A/C pump bracket. There should be what looks like a diode to me connecting the two terminals of the connector. I tried replying to this thread earlier this week, but we were at my parents' house for Thanksgiving and my dad's Mac wouldn't let me reply for some strange reason. Last edited by pjmoreland; 11-28-2005 at 01:17 AM.

11-28-2005, 11:14 PM	#8
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	Re: more wiring ?'s hey thanks, that's what i was waiting for. i actually found that green wire youwere talking about yesterday, or the day before, i had it wrapped around the firewall, laying on the cab floor so i didn't see it. i'm leaving those wires off for now, i should recieve a factory assembly manual and shop manual in the mail tomorrow, hopefully i'll get some good diagrams. thanks Last edited by matthufham; 11-28-2005 at 11:15 PM.

11-29-2005, 01:34 AM	#9
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,638	Re: more wiring ?'s I have a schematic that shows the carb solenoid wiring. If your manuals don't show it, I can scan the schematic for you.

11-29-2005, 12:15 PM	#10
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	Re: more wiring ?'s A little insight on the AC Attached Images

11-29-2005, 12:32 PM	#11
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	Re: more wiring ?'s wow that's nice, where'd you get that?

11-29-2005, 01:03 PM	#12
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	Re: more wiring ?'s You play on here long enough, you can find anything you want to know about these trucks.



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