Troubleshooting Trailer Wiring With 2002 GMC Sierra 1500HD
Published 01/25/2018
Question:
I have a curt installed already. Problem I have is all signals work on both 7 and 4 position connectors using a meter and connected to my LED single car auto-transport trailer. I have a old bulb trailer that using a 12v battery all lights work. But if I connect bulb trailer to truck no bulb lights work. I tried jumping a bulb across LT/brake to ground on truck and bulb light doesn't work, no voltage. Bulb trailer has worked for over a year, acts like curt can't supply current?
asked by: Jeff
Expert Reply:
There are taillight converters available and it is possible I can find something to work for you though I would need to know the year of your GMC Sierra 1500 in order to find out. If you can get back to me with that information I can try and find a solution for you.
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- No Converter
- Factory Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- CURT
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on Custom Fit Vehicle Wiring
Jeff
1/25/2018
I have a curt installed already. Problem I have is all signals work on both 7 and 4 position connectors using a meter and connected to my LED single car auto-transport trailer. I have a old bulb trailer that using a 12v battery all lights work. But if I connect bulb trailer to truck no bulb lights work. I tried jumping a bulb across LT/brake to ground on truck and bulb light doesn't work, no voltage. Bulb trailer has worked for over a year, acts like curt can't supply current?