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Back-up lights not working.
#731449 January 02nd 2018 11:25 pm
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New bulbs but still not working. Tail, brake, and signals work fine. No problem switching to R. Even wiggled the gear selector and nothing. All fuses are good. Wiring seems good. Any ideas?? Thanks.

Re: Back-up lights not working.
chevydude1987 #731457 January 03rd 2018 9:27 am
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Possibly a short in the bulb socket?


Steve
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Re: Back-up lights not working.
chevydude1987 #731463 January 03rd 2018 10:42 am
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I'd say the switch is bad.


Einstein, when describing radio said "Wire telegraph is like a very long cat. You pull his tail in NY and he meows in LA. And radio works the same way: you send signals here, they receive them there. The only difference is that there is no cat."
Re: Back-up lights not working.
chevydude1987 #731484 January 03rd 2018 8:00 pm
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In this order:

1)Remove the "plug" from the switch.
2)Jump the two leads with a paper clip/ wire (or something similar).
3)Turn the key to the "on" position.
4)Check lights. If they're on-the switch is bad. If not , possible(probable) ground issue. If you end up searching for wiring issues , leave the jumper in so you can leave the trans in park and not have to explain why you got run over by your own van.

Remember this about electrical issues : the dumber the problem , the more likely it is a ground issue.

Last edited by Hasan Ben Sobar; January 03rd 2018 8:03 pm.

Tucson-it's a dry heat...like an oven
Re: Back-up lights not working.
Hasan Ben Sobar #731589 January 08th 2018 2:43 am
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Originally Posted by Hasan Ben Sobar
In this order:

1)Remove the "plug" from the switch.
2)Jump the two leads with a paper clip/ wire (or something similar).
3)Turn the key to the "on" position.
4)Check lights. If they're on-the switch is bad. If not , possible(probable) ground issue. If you end up searching for wiring issues , leave the jumper in so you can leave the trans in park and not have to explain why you got run over by your own van.

Remember this about electrical issues : the dumber the problem , the more likely it is a ground issue.


I'm lost. What plug from what switch?? And what 2 leads do I jump?? Lol. I hope I dont get ran over by my own van!

Re: Back-up lights not working.
chevydude1987 #731591 January 08th 2018 8:13 am
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Get a wiring diagram.

Diagnosing wiring issues without one is like trying to drive from Prescott Michigan to Doyle Tennessee without a road map.


Gregg Groff

The right to bear vans

65 ChevyVan Pontiac OHC 6/TH2004R
68 ChevyVan 108 454/4L80E
86 Dodge "Yeah, it's got a 318"
83 ChevyVan Shorty- B2%B Pt II
Re: Back-up lights not working.
chevydude1987 #731597 January 08th 2018 10:27 am
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It would help to know year/model you have, and then someone who has experience with that year/model/problem could help. But, I'll try.

Most likely, the switch is where the steering column goes through the floor. And also, depending on year, back up lights may be the only thing switched, so there would only be two wires, making it easy to know what to jump.

But,truthfully, I'm just guessing.



Einstein, when describing radio said "Wire telegraph is like a very long cat. You pull his tail in NY and he meows in LA. And radio works the same way: you send signals here, they receive them there. The only difference is that there is no cat."
Re: Back-up lights not working.
chevydude1987 #731606 January 08th 2018 3:05 pm
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True. Year and model would be a good idea. 1987 G20.


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