On my 2001 2500 dodge cummins my marker lights have stopped working witch causes my trailer lights not to work, does anyone have any ideas?

SOURCE: 2005 Chevy Tahoe Trailer Running Lights Out

Depending on what type of trailer you have, a blown lightbulb on one marker could kill them all (like the old Christmas light strings). Look at those, and make sure your ground is good.

SOURCE: 09 Silverado LS no trailer clearance lights

make sure the ground wire is hooked up, i've seen many trailers where the ground wire just hangs, then your relying on the ground to work between the ball and the hitch, not typically a good ground.

Mike Butler

• 6674 Answers
• Posted on Jul 02, 2009

SOURCE: Right side of trailer running lights does not work

Usually one of the holes in the marker light where screw goes in, has metal contact where screw meets light, but if not, and they are not push in wire connection type from behind, then just run your white wire up through hole in housing, and bare the end & tighten it up under screw holding light to body. White should be ground, brown should be power.

Mike Butler

• 6674 Answers
• Posted on Jul 02, 2009

SOURCE: Had a problem with a right, amber side marker on right side

Usually one of the holes in the marker light where screw goes in, has metal contact where screw meets light, but if not, and they are not push in wire connection type from behind, then just run your white wire up through hole in housing, and bare the end & tighten it up under screw holding light to body. White should be ground, brown should be power.

SOURCE: 2000 Dodge Ram - No hazard flashers

Possibly blew out the hazard flasher unit. Check the flasher unit (usually there are 2, one for directionals and one for flashers).