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08-09-2021, 12:01 PM
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#1 |
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Registered User
Join Date: Feb 2008
Location: Shawano, WI
Posts: 94
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64 Brake Lights
Our son picked up a 64 C20 and the brake lights are not working. Spent some time yesterday tracing everything and trying to minimize what the issues could be.
Turn signals work with or without the headlights on. Tail lights work with the headlights on. There was some previous wiring splicing happening in the rear, but power is coming to the rear connection plug OK. Validated that the brake switch is working. The headlight switch is sensitive, pull it out to far and the headlights will turn off. So we ordered a new switch. Could that have anything to do with it? I'm assuming then it comes down to the turn signal switch since that is where power goes for distribution after the brake switch. Any other suggestions? |
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08-09-2021, 03:06 PM
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#2 |
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Moderator
  
Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: 64 Brake Lights
Grounds seem to come up the most as problems.
__________________
Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
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08-09-2021, 07:32 PM
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#3 |
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Moderator
Join Date: Dec 2012
Location: ON, Canada
Posts: 2,176
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Re: 64 Brake Lights
On my truck (and the same as many, many other reports on here): grounds. Here's how I got the lights working:
- removed lenses - removed buckets - ground from buckets to bed - ground from bed to frame - ground from bed to cab - ground from cab to frame Lights work perfectly now. |
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08-10-2021, 08:08 AM
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#4 |
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Registered User
Join Date: Feb 2008
Location: Shawano, WI
Posts: 94
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Re: 64 Brake Lights
I'll add a ground to the taillight housing and see what happens.
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08-10-2021, 09:43 AM
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#5 |
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Registered User
Join Date: Feb 2013
Location: central California
Posts: 2,778
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Re: 64 Brake Lights
If its all fine at the rear connection plug, then you've got it nailed down to the rear lights themselves, (sockets, grounds bulbs etc) or the wiring at the rear bumper. On my friends trucks and my own, it has been easier to just pull the rear lights and the bumper harness to clean things up and rewire it while creating better grounds. I usually end up saving the plug and sockets while eliminating lots of spaghetti in between.
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08-10-2021, 07:41 PM
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#6 |
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Registered User
 
Join Date: Jun 2013
Location: mechanicsville,md
Posts: 360
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Re: 64 Brake Lights
not a bad idea to replace turn signal switch, contacts in there can be pretty worn after 50+ years....
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08-14-2021, 10:27 PM
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#7 |
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Registered User
Join Date: Feb 2008
Location: Shawano, WI
Posts: 94
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Re: 64 Brake Lights
Put in a new turn signal switch and solved the problem. Thanks again for the suggestions!
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