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Old 07-01-2010, 03:59 PM
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cab light wiring problems

hey guys i just installed a set of harbr freight cab lights on my truck and ran them to a seperate switch but cant get no power to the lights thenselves off the lead wire i have power from the fuse block were i ran my power source from to the switch itself and it lights up but for some reason theres no power leaving the switch to the lights themselves help me guys please

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Old 07-01-2010, 05:24 PM
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Originally Posted by 81scottsdale400
hey guys i just installed a set of harbr freight cab lights on my truck and ran them to a seperate switch but cant get no power to the lights thenselves off the lead wire i have power from the fuse block were i ran my power source from to the switch itself and it lights up but for some reason theres no power leaving the switch to the lights themselves help me guys please
Power into switch/no power out of switch= switch not turned "on", or a bad switch. What happens when you bypass the switch?

Be sure the ground is good and that the circuit you're using is really hot. You might need to have the key in the "run" position, or the circuit might only be hot with the key on "accessory", for instance.
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Old 07-01-2010, 05:28 PM
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cab light wiring problems

the switch is turned on cuz the light inside it comes on when u flip it to the on position and the light shuts off when u turn the key off and it lights back up when the truck is running and in the accesory position where would a good place to put the ground?
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Old 07-01-2010, 05:37 PM
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Quote:
Originally Posted by 81scottsdale400
the switch is turned on cuz the light inside it comes on when u flip it to the on position and the light shuts off when u turn the key off and it lights back up when the truck is running and in the accesory position where would a good place to put the ground?
The ground should go to a steel part of the body, somewhere convenient, yet hidden from accidentally getting snagged by anything.

Remove the paint from under the terminal and you should be good to go.
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Old 07-01-2010, 05:41 PM
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cab light wiring problems

well then i got a good ground then thanks but i still dont know how to get the lights turned on and its confusing ive used my test light and with the truck set to accesories or running i have power to the switch but no power is coming outta the sitch through the lights ive checked the wire and the terminak at the switch and theres nothing
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Old 07-01-2010, 05:46 PM
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Quote:
Originally Posted by 81scottsdale400
well then i got a good ground then thanks but i still dont know how to get the lights turned on and its confusing ive used my test light and with the truck set to accesories or running i have power to the switch but no power is coming outta the sitch through the lights ive checked the wire and the terminak at the switch and theres nothing
I'm assuming if you jump past the switch w/a jumper wire, you get lights, right?

If so, it gots to be a bad switch. Even new, the junk coming in from China will often be DOA.
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Old 07-01-2010, 05:48 PM
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cab light wiring problems

i didnt try by passing the switch im not much of a wiring guy so i never thought of that so i just jump from the power wire to the lead wire and that should turn my lights on?
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Old 07-01-2010, 07:00 PM
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Quote:
Originally Posted by 81scottsdale400
i didnt try by passing the switch im not much of a wiring guy so i never thought of that so i just jump from the power wire to the lead wire and that should turn my lights on?
Yeah- just bypass the switch w/a short piece of wire is all you need to do. Be careful and don't touch the hot wire to metal or the fuse may blow, but other than that it's straightforward.
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Old 07-01-2010, 07:02 PM
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cab light wiring problems

sweet thanks guys ill be sure to try that when i get a new fuse it was no good when i first opened the cab lights (they must hav dropped the box)
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