Tail Light Problem, odd one this is. Options

[amilleri]

So I've had this problem for a while, not quite sure what is causing it at the moment, but... My tail lights currently do not work, the running lights only. Brake and reverse lights work. I changed the rear harness in the trunk that goes to the tails and have checked all fuses, the front marker lights work as well. I've also noticed that the rear defroster doesn't work, but that may be an unrelated issue. Anyone got any ideas here for this one?

[Galcobar]

When you say the rear lights, you mean the ones which share a position with the brake lights? Common issue there is that one of the dual filaments in an 1157 burnt out -- usually it's the running light as it's on all the time. So, the bulb will not illuminate until you press the brake pedal, which is how I read your description of the problem.

You mention changing the harness, but not the bulbs.

When you say the rear lights, you mean the ones which share a position with the brake lights? Common issue there is that one of the dual filaments in an 1157 burnt out -- usually it's the running light as it's on all the time. So, the bulb will not illuminate until you press the brake pedal, which is how I read your description of the problem.