Question about 2000 Chevrolet Silverado 1500

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Wiring problems I am getting no current for the trailer plug driverside turn signal or brake light on my 2000 silverado??

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  • Mike Butler
    Mike Butler May 11, 2010

    If all fuses under hood check o.k. as well as under dash, then I'd start at rear bumper, or wherever your plug-in is, then at connector & work forward. There is usually a connection not too far from bumper that may even be corroded. Is your plug wired into existing wiring , or is it into a connection in between that plug I mentioned ahead of rear bumper?

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  • Chevrolet Master
  • 1,632 Answers

Re wire the harness to trailer,
change the bulbs or check them for operation,
fuses,,,,,, gounds??????
Vitally

Posted on Jun 02, 2009

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Have issues with trailer lights. Both turn signals on trailer flash when I use left or right turn signal. Have 7 pin factory plug. Lights on trailer work fine, hooked up to 97 Silverado. Act funny on 2000...


Standard wiring colors are as follows:

4-Way

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6-Way

7-Way

Green

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It sounds like your green and yello wires are shorted together somewhere along the length of the harness. I would check the wires on the trailer first. Easier yet, if you have another trailer to connec or access to another to use for testing, connect to it and see if the problem repeats; if it does the trouble is in the vehicle's wiring.

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Chances are the trailers bulbs need to be replaced. The truck uses the same wire for turn and brake signals. If they work on the truck, That means there is something wrong with the trailer.
I wrote a great article about diagnosing trailer problems. Click here to read.

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I have a 2005 silverado, I am tring to wire a 4 wire trailer plug to this truck. I have 1 wire to right signal, 1 wire to left signal, 1 wire to running lights and a ground wire. My problem is on the truck...


Under the pan on the drivers side u can install the proper harnes for your trailer. The maim post for trailer brakes is on the front fuse panel under the hood.If you are running your own in line trailer lights...........I would start at the main break away dis-connect.

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I have the exact same issue. I have also tested my trailer on other vehicles and it works fine. I even purchased a light up tester and found the problem at the harness. It seems like a bad ground to me but I can't seem to find one.

The trailer lights have a common brake/turn wire while the truck has seperate turn and brake lights. I think the problem lies with the device that marries the two for the trailer wiring but I don't know where to find it?

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