Wiring - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rondog4416 · 02-20-2013, 11:30 PM

I need to know where some wiring goes in engine compartment, there is a round plug with a light green and a dark green wire I think temp sensor ? The other is a dark green wire with two clips on the end ,any help would be great. Thanks Ron
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jbclassix · 02-20-2013, 11:43 PM

Got any pictures? the temp sensor is a single wire (green I think) with a flat blade spade connector. The 2 wire with a round one may be reverse switch.

rondog4416 · 02-21-2013, 01:22 AM

I will get pic's tomorrow thanks Ron
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**LockDoc** · 02-21-2013, 11:13 AM

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A little more info would be good too. A/C or no, year of truck, six or V-8, ect. The wiring can be different for every configuration...

LockDoc

rondog4416 · 02-23-2013, 03:58 AM

It's a 1972 v-8 turbo-400 no a/c
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**LockDoc** · 02-23-2013, 04:03 PM

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How big is the round connector? Sounds like it might be the tail light connector but it would have four wires to it, Light Green, Dark Green, Yellow, and Brown and is about 1 1/8" in diameter.

The only single Dark Green wire I know of without A/C would be the temp sensor but I've never seen one with two clips on the end of it.

Like jbcassix mentioned, pictures would really help on this one.

LockDoc

jbclassix · 02-23-2013, 05:24 PM

I cant think of anything on the engine other than ac for the single green. What about lighting or fan?
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rondog4416 · 03-18-2013, 02:54 PM

Sorry it took so long to get pic's but here they are Hope someone can help me figure this out !!
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rondog4416 · 03-18-2013, 02:56 PM

Here is the other
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BB72CHEVKT · 03-18-2013, 03:08 PM

Quote:

Originally Posted by rondog4416

Sorry it took so long to get pic's but here they are Hope someone can help me figure this out !!
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horn

vectorit · 03-18-2013, 04:25 PM

The first one is your temp sending unit wire.

The second one I am not sure about, but I don't think it is for the horn. Since the horn needs only one wire, and the horn has a male blade connecter.

BB72CHEVKT · 03-18-2013, 04:42 PM

I thought the first pic might be the horn.

jorgensensc · 03-18-2013, 10:47 PM

It may be the jumper for hi/lo horns. Mind has a green jumper between them.
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rondog4416 · 03-20-2013, 10:10 PM

Thanks guys that helps me out a lot !! Now to get back on it and go for a ride !!!!
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jorgensensc · 03-20-2013, 10:20 PM

Is the second one the turn signal wiring? The one that goes through the core support the the turn signal with pigtail connects to?
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Burb · 03-22-2013, 11:19 PM

That was my thought for the second one ...the engine side for the front turn signals should have one on the other side as well
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rondog4416 · 03-28-2013, 11:52 AM

in the second picture there is only one of these so im thinking temp sender thanks again for the help ron

damianbryand · 05-04-2013, 03:05 PM

The second wire has a two prong connection that fits perfectly on the drivers side of a turbo 400. Not sure if thats where it goes but the exact length runs directly to the two prong (if you have one) connection on the tranny. I'm have the same wire running and I'm trying to figure it out as well.

02-20-2013, 11:30 PM	#1
rondog4416 Registered User Join Date: May 2010 Location: puyallup wa Posts: 233	Wiring I need to know where some wiring goes in engine compartment, there is a round plug with a light green and a dark green wire I think temp sensor ? The other is a dark green wire with two clips on the end ,any help would be great. Thanks Ron Posted via Mobile Device

02-20-2013, 11:43 PM	#2
jbclassix Junk Yartist Join Date: Jul 2009 Location: Greeley, CO Posts: 2,203	Re: Wiring Got any pictures? the temp sensor is a single wire (green I think) with a flat blade spade connector. The 2 wire with a round one may be reverse switch. __________________ -Jeremy YOU ONLY FAIL IF YOU STOP TRYING 70 Crew Cab Build Link 70 GMC Suburban 4X4 build thread 95 Yukon Daily Driver Rebuilding an NP205

02-21-2013, 01:22 AM	#3
rondog4416 Registered User Join Date: May 2010 Location: puyallup wa Posts: 233	Re: Wiring I will get pic's tomorrow thanks Ron Posted via Mobile Device

02-21-2013, 11:13 AM	#4
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,315	Re: Wiring - A little more info would be good too. A/C or no, year of truck, six or V-8, ect. The wiring can be different for every configuration... LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

02-23-2013, 03:58 AM	#5
rondog4416 Registered User Join Date: May 2010 Location: puyallup wa Posts: 233	Re: Wiring It's a 1972 v-8 turbo-400 no a/c Posted via Mobile Device

02-23-2013, 04:03 PM	#6
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,315	Re: Wiring - How big is the round connector? Sounds like it might be the tail light connector but it would have four wires to it, Light Green, Dark Green, Yellow, and Brown and is about 1 1/8" in diameter. The only single Dark Green wire I know of without A/C would be the temp sensor but I've never seen one with two clips on the end of it. Like jbcassix mentioned, pictures would really help on this one. LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - Last edited by LockDoc; 02-23-2013 at 07:31 PM.

02-23-2013, 05:24 PM	#7
jbclassix Junk Yartist Join Date: Jul 2009 Location: Greeley, CO Posts: 2,203	Re: Wiring I cant think of anything on the engine other than ac for the single green. What about lighting or fan? Posted via Mobile Device __________________ -Jeremy YOU ONLY FAIL IF YOU STOP TRYING 70 Crew Cab Build Link 70 GMC Suburban 4X4 build thread 95 Yukon Daily Driver Rebuilding an NP205

03-18-2013, 02:54 PM	#8
rondog4416 Registered User Join Date: May 2010 Location: puyallup wa Posts: 233	Re: Wiring Sorry it took so long to get pic's but here they are Hope someone can help me figure this out !! Posted via Mobile Device Attached Images

03-18-2013, 02:56 PM	#9
rondog4416 Registered User Join Date: May 2010 Location: puyallup wa Posts: 233	Re: Wiring Here is the other Posted via Mobile Device Attached Images

03-18-2013, 04:25 PM	#11
vectorit What? Join Date: Jun 2007 Location: Southern California Posts: 7,617	Re: Wiring The first one is your temp sending unit wire. The second one I am not sure about, but I don't think it is for the horn. Since the horn needs only one wire, and the horn has a male blade connecter. __________________ Chris 1968 K20 Suburban 1972 K10 LWB PU

03-18-2013, 04:42 PM	#12
BB72CHEVKT Junior Member Join Date: Mar 2007 Location: Hideaway, TX Posts: 4,948	Re: Wiring I thought the first pic might be the horn. __________________ 71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400

03-18-2013, 10:47 PM	#13
jorgensensc Registered User Join Date: Jul 2003 Location: Cypress, Tx Posts: 4,006	Re: Wiring It may be the jumper for hi/lo horns. Mind has a green jumper between them. Posted via Mobile Device __________________ 1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE

03-20-2013, 10:10 PM	#14
rondog4416 Registered User Join Date: May 2010 Location: puyallup wa Posts: 233	Re: Wiring Thanks guys that helps me out a lot !! Now to get back on it and go for a ride !!!! Posted via Mobile Device

03-20-2013, 10:20 PM	#15
jorgensensc Registered User Join Date: Jul 2003 Location: Cypress, Tx Posts: 4,006	Re: Wiring Is the second one the turn signal wiring? The one that goes through the core support the the turn signal with pigtail connects to? Posted via Mobile Device __________________ 1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE

03-22-2013, 11:19 PM	#16
Burb Coordinator of Synchronicity Join Date: Dec 2005 Location: West of Houston, TX Posts: 437	Re: Wiring That was my thought for the second one ...the engine side for the front turn signals should have one on the other side as well Posted via Mobile Device __________________ Rick 1971 Suburban ... W.I.P. *Build Thread* Customization is ones personal touch-- not what other people think it should be



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03-28-2013, 11:52 AM	#17
rondog4416 Registered User Join Date: May 2010 Location: puyallup wa Posts: 233	Re: Wiring in the second picture there is only one of these so im thinking temp sender thanks again for the help ron

05-04-2013, 03:05 PM	#18
damianbryand Registered User Join Date: Feb 2013 Location: cedar park texas Posts: 31	Re: Wiring The second wire has a two prong connection that fits perfectly on the drivers side of a turbo 400. Not sure if thats where it goes but the exact length runs directly to the two prong (if you have one) connection on the tranny. I'm have the same wire running and I'm trying to figure it out as well.

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