LED Lights on Truck

Old 03-11-21, 12:40 PM
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Question LED Lights on Truck

I recently bought a used truck and there are bed liner lights on it with a switch and some wires but I am not sure what the wires are. I want to get these bed lights to work, so could someone help me identify what these wires are so I can go from there? I've attached some pictures for reference. Thanks!

Old 03-11-21, 02:40 PM
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I assume brown is positive and green is negative.

A multimeter or some way of testing for 12v would be helpful. I would start at the very end and test for power. If there is none I would move up the line towards the battery checking voltage every time there is a connection or switch. My guess is the problem is a bad connection or maybe a blown fuse.
Old 03-11-21, 03:56 PM
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Which wires are you talking about? The Green and Brown with insulated connectors or the brown lamp cord going to the switch?
EDIT: Which wire goes to the bed lights?
Old 03-11-21, 05:57 PM
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I'm assuming the green and brown wires are the power for the switch. The thick black cord is just connecting the switch to the LED lights in the bed of the truck. I'm assuming i'd need to power the switch but need to connect to these wires and i'm not sure what these wires are to buy some kind of adapter.
Old 03-15-21, 12:26 AM
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The brown wire looks a lot like that lamp cord going to that switch also one terminal is a male and the other female perhaps they go together?
Old 03-15-21, 04:10 AM
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First things first, you need a 12 volt tester or preferably an inexpensive analog voltmeter, NOT a noncontact voltage detector, in order to determine what's hot and what's not. Around $20 at your local Ace Hardware or big box will get you a voltmeter that will get you down the right path for this project as well as something that you may find handy at various times for many years. Once you have that in hand any number of people can help you diagnose what you have there.

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