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Only One Side Marker Light on RV Lights Up  


The right side marker light on travel trailer is very dim and no other running lights or side marker lights work. Turn signals and brake lights do work. Any idea what may be causing this and how I should go about fixing this? Thank you for your help!


Expert Reply:

Sounds like you have a good old fashioned ground problem. Start off by checking the connector on both your trailer and your tow vehicle to make sure they are clean and free of any debris.

Next check all of your grounds for your lights that are connected to the tail/running light circuit and that they are connected to a clean, bare metal surface. If the grounds look good then you will need to inspect the wiring itself and replace any sections that are damaged or pinched.

If this doesn't fix your lighting problem just let me know and I can help you troubleshoot further.

expert reply by:
Jon G

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