Electrical Problems

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Old Jan 18, 2010 | 01:41 PM
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DandyD's Avatar
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Electrical Problems

I have a 72 Charger and recently took the rear bumper and light assembly off for repaint. When I reconnected the wiring harmess in the trunk, I found that the rear tail lights no longer work with no blinkers or brake lights. When I turn the light switch on, the headlights and front parking lamps work along with most of the marker lights, but they no longer blink as directed. Also, the passenger side rear marker light does not work either as it is connected to the rear light harness. Could this be a flasher or turn signal switch failer? or something else? Any advie would be appreciated. Thanks.
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Old Jan 18, 2010 | 01:45 PM
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sgnrulz's Avatar
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Check your bulbs.
Than double check all your connections.
There might be an inline fuse somewhere too. Though doubtful might wanna look into it.
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Old Jan 18, 2010 | 11:10 PM
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theomahamoparguy's Avatar
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may be a ground issue. Is there a seperate ground wire for those tail lights? Or, painting the brackets maybe. Any way the "no-flashing" is from not enough resistance in the system. The turn sinal flasher must have a certain amouint of resistance in the turn/flash system for it to work. Bulbs not working for any reason upsets the system. In other words, It must have the "resistance" from ALL the bulbs in the system to work.
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Old Jan 19, 2010 | 03:57 AM
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Sounds like a ground to me also... New paint will not give a proper ground and then crazy things will happen...
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Old Jan 19, 2010 | 06:27 AM
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GROUND

I agree with above posts that there is a ground issue. Find the ground connection point and be sure it is clean to BARE metal. If you painted in side the trunk, that is most likely the problem. I think the ground is in the wire loom in the trunk on the driver side and the ground connects in the corner. There may be more than 1 ground point.
My car is put away so I can't check, 74 & 72 should be pretty close to same.
One of your previous posts mention a 73 Satalite. What do you have?

Last edited by rdrunner1974; Jan 19, 2010 at 06:38 AM.
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Old Jan 19, 2010 | 07:43 AM
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It sounds similar to a problem I had with my RR last summer. Scotty helped me through it and it was indeed the ground. If it has the same wiring as mine there will be a ground connection inside the trunk behind the driver side marker light. And I think there is another one on passenger side... Check this out it might help:
http://www.mymopar.com/downloads/197...etChargerA.JPG
http://www.mymopar.com/downloads/197...etChargerB.JPG

Good luck!
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Old Jan 19, 2010 | 01:16 PM
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DandyD's Avatar
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RE: Electrical Problems - 72 Charger

Thanks for the responses. I actually did not rapaint the trunk. I repainted the taillight housings and powder coated the bumper and all brackets. I did check the ground wire in the trunk on the passenger side that is connected to the marker light and it is solid. Where would I find another ground to that circuit?
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Old Jan 19, 2010 | 05:07 PM
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MrOldart2U's Avatar
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Originally Posted by DandyD
Thanks for the responses. I actually did not rapaint the trunk. I repainted the taillight housings and powder coated the bumper and all brackets. I did check the ground wire in the trunk on the passenger side that is connected to the marker light and it is solid. Where would I find another ground to that circuit?

I would first check the POWER side to make sure you are getting power to the connector, (test light lights on) if you are getting power where the harness connects, then it will just be a mater of finding where along the wire the power is interupted. ( by the wiring diag, it looks like the power wire is black... {don't blame me I didn't design it})IF you don't have power on the connector then the non-power issue is most likely a fuse. ie: tail light or could be marked tag light. You said you repainted the taillight housings and by looking @ the schematic I would agree with the others on it being a poor ground. JMHO . I claim to know nothing though.



DANG I resemble that "Senior Member" remark....lol

Last edited by MrOldart2U; Jan 19, 2010 at 05:08 PM. Reason: j/k
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Old Feb 17, 2010 | 07:55 AM
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OK - I just got the car back from paint and filed all connection tabs around the rear headlight housings and front parking light housings prior to re-installation. I now have rear tail lights and blinkers on the driver side front and back. However, I still don't have blinkers on the passenger side. Obviously there was a grounding issue, but now what?
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Old Feb 17, 2010 | 11:31 AM
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72RDRNR's Avatar
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Memory is a bit fuzzy, but I think there is a ground for passenger side somewhere close to taillight housing?
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