Originally Posted by traverlaw
I have a 2003 HiLo TrailLite 24-foot and the front marker lights are not getting power. How is this wiring routed? Where is the likely break in the wiring?
You might 'carefully' remove the mounting screws for the running lights and check the wiring behind them. Using a volt-ohm meter, check for voltage as well as ground continuity. Sometimes, the metal becomes corroded and you can use sand paper or knife blade to scratch the corrosion off so good contact is made with the bulb. You may have to add some tension to the contact so ensure it has good contact with the bulb. I emphasize using care in removing these fixtures as they are not constructed very well and they will break. I had to use gorilla glue to glue the mount back together as it broke apart when I removed it.
If I'm not mistaken, there is one continuous run for the battery and ground for the running lights. If some are working and others are not, the wiring is attached to the mount with two in and out tension connectors and one conductor may have pulled loose allowing one bulb to burn while succeeding lights will not.
Hope this helps.