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03-03-2019, 01:33 PM
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#1 |
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Registered User
Join Date: Sep 2013
Location: North Tonawanda, NY
Posts: 236
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1972 GMC 3500 Rear Wire Harness
Howdy - Looking at the attached photos there is a 4 wire connector and a gold anodized cylinder with a red wire hanging from it that I am not sure what these are for. Both are at the rear bumper. Any help appreciated. Thanks!
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03-03-2019, 02:15 PM
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#2 |
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The Older Generation
   
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,770
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Re: 1972 GMC 3500 Rear Wire Harness
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Your rear light harness plugs into the 4 wire connector. You should have a short harness that will plug into it that goes to the tail lights, reverse lights & license plate light. Don't know what the cylinder is. What is on the other end of it? LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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03-03-2019, 03:23 PM
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#3 |
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Registered User
Join Date: Feb 2016
Location: Trenton,Ontario & South Carolina
Posts: 755
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Re: 1972 GMC 3500 Rear Wire Harness
Did this truck ever have a slide in camper in it.?
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03-03-2019, 04:09 PM
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#4 |
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Registered User
Join Date: Sep 2013
Location: North Tonawanda, NY
Posts: 236
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Re: 1972 GMC 3500 Rear Wire Harness
Yes it did.
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03-03-2019, 04:56 PM
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#5 |
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The Older Generation
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,770
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Re: 1972 GMC 3500 Rear Wire Harness
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Looking at that connector again that is the end that is connected to the rear lights. The other half should be stuck in a hole in the rear cross member. Be sure and clean the terminals up before connecting it together..... LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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03-03-2019, 05:05 PM
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#6 |
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Registered User
Join Date: Feb 2016
Location: Trenton,Ontario & South Carolina
Posts: 755
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Re: 1972 GMC 3500 Rear Wire Harness
The extra plug will be for the lights for the camper.
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03-03-2019, 05:48 PM
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#7 | |
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The Older Generation
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,770
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Re: 1972 GMC 3500 Rear Wire Harness
Quote:
OK, For the camper tail, license plate & reverse lights. That makes sense. Thanks. LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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03-03-2019, 07:53 PM
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#8 |
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Registered User
Join Date: Sep 2013
Location: North Tonawanda, NY
Posts: 236
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Re: 1972 GMC 3500 Rear Wire Harness
All - thanks for your input - once I looked around underneath I was able to find the mating connector for the rear lights on the cross member drivers side. I also noticed a similar connector at the firewall by the distributor that was not plugged in for some reason. All good now!
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03-03-2019, 10:42 PM
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#9 | |
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The Older Generation
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,770
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Re: 1972 GMC 3500 Rear Wire Harness
Quote:
Good deal! Glad you have it working. LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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