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#1 |
Registered User
Join Date: Oct 2016
Location: alabama
Posts: 1
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66 c10 tail light wiring problems
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#2 |
Registered User
Join Date: Jan 2013
Location: Las Vegas, NV
Posts: 1,853
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Re: 66 c10 tail light wiring problems
I just ran the intermediate one with 4th wire (light green).
Brown to lights on. Green right, Yellow left. At rear wires are black and white(neutral). Before you get crazy check the grounds on taillights. Screws to body inside lights.
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#3 |
Registered User
Join Date: Nov 2012
Location: Kingsburg CA
Posts: 581
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Re: 66 c10 tail light wiring problems
I agree. Check your grounds. I ran a ground strap from the taillight housing to the frame on both the left and right sides. Be sure and scrape away all the grease, oil and paint. Bare metal only.
Even after this, there were issues. Make sure the bulb is properly seated in the socket as that messed me up as well. Just stay after it...you'll get it! Tom
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#4 | |
Registered User
Join Date: Oct 2015
Location: Mountain View
Posts: 121
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Re: 66 c10 tail light wiring problems
Quote:
There's a connector on the driver's side (US) at the firewall. You could make sure power's getting through there (you'd need someone to press the brake or a piece of wood to hold the brake pedal down. There's another connector near the rear (my bed doesn't have wood, so it's easier to test).
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1964 C10 LWB->SWB, 283->454, SM420->200-4R MECHANIC: "ME" |
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#5 |
1965 Chevy C10, 2005 4.8L/4l60
![]() Join Date: Aug 2004
Location: DFW Texas
Posts: 8,543
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Re: 66 c10 tail light wiring problems
There is supposed to be a connector on the DS at the frame rail end.
I would check the bulb socket after you ensure the bed is grounded. I grounded my truck, eng to cab, eng to frame, cab to Gram, bed to frame at front and rear( opposite sides)core support to frame
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#6 | |
Registered User
Join Date: Jun 2013
Location: joshua tree ca.
Posts: 1,484
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Re: 66 c10 tail light wiring problems
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#7 | |
Registered User
Join Date: Aug 2016
Location: Ogden, UT
Posts: 85
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Re: 66 c10 tail light wiring problems
Quote:
Thanks Rope |
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#8 |
Registered User
![]() Join Date: Sep 2011
Location: Lewisburg, TN
Posts: 315
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Re: 66 c10 tail light wiring problems
I ran a ground from my battery negative to all the lights in the rear. Did the same in the front, no more lighting problems.
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Never drive faster than your Guardian Angel can fly Larry |
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#9 |
Registered User
Join Date: Mar 2011
Location: Bandera, Texas
Posts: 251
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Re: 66 c10 tail light wiring problems
Using silicone paste at all the connections including the bulb socket will help as well.
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#10 | |
Registered User
Join Date: Jun 2013
Location: joshua tree ca.
Posts: 1,484
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Re: 66 c10 tail light wiring problems
Quote:
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#11 |
Registered User
Join Date: Aug 2016
Location: Ogden, UT
Posts: 85
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Re: 66 c10 tail light wiring problems
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#12 |
Chevy addict
Join Date: May 2012
Location: Iron Ridge, WI
Posts: 1,085
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Re: 66 c10 tail light wiring problems
Also make sure your turn signal lever is in the neutral position
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1966 c10, need help please, wiring diagram |
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