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Discussion Topic:
'36 Ford switch/wiring update
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rogbell |
02-04-2016 @ 4:35 PM
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New Member
Posts: 106
Joined: Dec 2009
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Earlier I had posted 3 items regarding problems when replacing the wiring on my '36. Happy to say all have been resolved due to the diligent help from the past president of our Regional Group, 148, Rudy Perez. He spent hours under the car last night setting up the brake light switch. There was nothing wrong with the harness nor the light switch. The taillight would not come on because of a poor ground. What I thought was the taillight coming on when the light switch was off was the brake light. He had to tweak, pry, grind, and bend the brake light switch in order for it to work. This was on a new reproduction switch. I eventually could have solved the ground problem but not the switch problem. Thanks to Rudy, experience really counts.
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TonyM |
02-04-2016 @ 8:49 PM
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Posts: 450
Joined: Sep 2010
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How did you solve the ground problem? What exactly did you do?
. . . 78-730B
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TomO |
02-05-2016 @ 6:15 AM
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Senior
Posts: 7243
Joined: Oct 2009
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Roger, I am glad that your problem is resolved. Having friends like Rudy, is one of the benefits of belonging to a Regional Group.
Tom
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rogbell |
02-05-2016 @ 9:39 AM
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New Member
Posts: 106
Joined: Dec 2009
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Rudy used a test light and determined that even though the wire to the taillight was hot when the lights were turned on the light would not come on. So, he took apart the taillight housing and found that the the screws were so rusted and there was very poor contact between the light housing and the the body. He simply replaced the screws, cleaned up the area where the housing and body made contact and then tested the bulb contacts again. Now, the contacts lit up the test light and we had a working taillight.
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TonyM |
02-05-2016 @ 12:10 PM
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Member
Posts: 450
Joined: Sep 2010
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Thanks for the follow up explanation. I got a ground problem myself. I have no tail lights, very faint brake lights, and the dash lights come on when the brake pedal is pushed down. Headlights work in all three positions. I need to solve this. Thanks again.
. . . 78-730B
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trjford8 |
02-06-2016 @ 7:56 AM
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Senior
Posts: 4202
Joined: Oct 2009
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Poor grounding can cause all kinds of vexing issues. Grounding completes the circuit. Electricity will find the easiest path to ground.
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rdofloor |
02-09-2016 @ 9:34 AM
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Member
Posts: 42
Joined: Mar 2014
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glad you found the problem good to have friend that will help Roger Oliver
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juergen |
02-09-2016 @ 9:59 AM
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Member
Posts: 254
Joined: Jan 2010
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Tony M, I think you realize you have a grounding problem. From what you describe, when you press the brakes, the voltage goes to the brake light wiring to the brake light filament, then through the combination brake/tail light ground on the bulb, then goes through the tail light filament, then through the tail light wiring which is connected to the dash lights and filaments and then to the dash light ground to complete the circuit. Sometimes you need to run a ground wire from you brake/tail light housing to a good ground on the frame.
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