Try this. Remove the headlight/park/dimmer switch from the dash and unplug the connector. Check the connector for possible signs of damage, burn mark, or frayed/cut wires. Do the same thing on the switch side.
Swap front side marker/turn lamps left to right. Plug the connector and the switch socket back together, and try turning on your taillight. And then, turn on the headlight. Check operations, all four sides. Then turn on your headlamps. Re-check operations.
If you have the same problem, you may have a bad headlamp/park/dimmer switch.
Tuesday, April 7th, 2009 AT 12:27 AM