The past two days I have had problems with the transmission interlock on my 97 f150. I use the one click method on the key position to get the truck started, however i don't have any tailights at all. No third brake light or either taillight. I have checked every fuse in the truck and also put a jumper wire through the switch located on the brake pedal. Nothing happens. This started as a problem once in a while and now is every time i get in the truck. Is this something i can diagnose myself or is this a dealer situation?

 

What about the bulbs ??? Have you checked all of the bulbs, could be that they all went at the sametime. Also, did you check the fuses with a multimeter ??? If they are the pull in and push in type that are narrow and incased in different colours of plastic, they maybe broken inside of the plastic where it is hard to see. Just some other ideas, good luck and keep us updated on your adventure.

Have Fun & Keep on Truckin'
Dean