Thread: Trailer light problems
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Short Wave Sportfishing Short Wave Sportfishing is offline
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First recorded activity by BoatBanter: Feb 2007
Posts: 5,649
Default Trailer light problems
On 15 Mar 2007 03:31:06 -0700, wrote:

Maybe one of you trailer boaters can help me out. I've got an
intermittent problem with my trailer lights - either one side or the
other will light (tail lights and side marker lights). This is
intermittent - sometimes both sides will light. I put a test light on
my truck's electrical input - that doesn't seem to be the problem Any
suggestions on where to start troubleshooting?
Thanks much.

You have a faulty ground somewhere.

95% of all trailer lighting problems are grounds.

Start at where the trailer lights are grounded to the trailer, check
the connection, clean the connector and the connector on the truck
paying particular attention to the ground and trace the wiring back to
see if there is a ground fault or wire that is being grounded against
the frame of the trailer. Check the grounds at the lights.

Sense a theme here? :)
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