First check fuse # 10 under the dash. That will be a 10 or a 15 amp, depending on the car model.
Look behind the right kick panel to see if you have a tail light relay. If you do, feel if that is clicking on when a helper turns the running lights on.
Here is a guide to help you check the fuses.
The next clue is if the sun visors' vanity lights and glove box light work. Those will only work when the tail lights or head lights are on.
If the fuses are okay I sounds like it could be the headlight switch. Here is a wiring diagrams for the tail lights and dash lights so you can see where you are loosing power.
Please let us know what you find. We are interested to see what it is.
Images (Click to enlarge)
Tuesday, November 17th, 2015 AT 10:19 PM