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Old 01-01-2021, 12:09 PM   #1
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No power to light switch??

Electrical trouble shooting help request. I’m not getting power to the passenger side outdoor light switch. Everything else works fine. It’s only the wires to this particular switch that are not getting power. I’ve checked all the fuses. Any ideas?
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Old 01-01-2021, 01:11 PM   #2
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Have you validated that there truly is no 12 volts to the switch with a meter. A common problem with lights SMB adds is they attach the ground to the body. That screw comes loose or the connection gets corroded and you no longer complete the circuit, but the break is on the return path back to the battery.

If not that then I would suspect a bad wire spice to the (I assume) passenger side 12 volt line. SMB was fond of the quick splice connectors on my rig.

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Old 01-01-2021, 01:29 PM   #3
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Thanks for the reply Scalf. Yes I did confirm with a meter that there is no power coming to the wires.
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Old 01-01-2021, 02:06 PM   #4
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Another possible place the would tap into live 12 volts would be at a 12 volt aux connector. Many times that are close by to light switches. Actually what about the switch next to it in the picture? does it have 12 volts?
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Old 01-01-2021, 02:10 PM   #5
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The other switch is the for the water pump. I may end up just tying into that.
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Old 01-01-2021, 06:53 PM   #6
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Its possible they are switching the ground wire, in which case you would not read voltage between either wire and ground. Just a thought as I have no idea how SMB wires the lights.
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