No Taillights Have Brake Lights

[fishorcatchbait]

Have a 1970 F250. All the lights work but the taillights. Brake lights come on, blinkers work, headlights work. Someone formerly hooked the truck up for a trailer. There are 2 wires running to the top bulb behind the taillight lens. The fuses are fine, and the bulb is fine. Does anyone know what might be going on?

[72BahamaBlue]

Are those the bulbs with the 2 wires coming out of bulb base? I rented a trailer at U-Haul years ago, had to buy those bulbs with the wires. We went through 3 packages before finding a pair that worked, I'd be suspicious of 'em, if that's what you have.
Have you tried regular 1157 bulbs? Checked grounds, checked for power to the bulb base contacts in the socket? Also check the harness, I've seen so many messed up from previous owners...

[fishorcatchbait]

I'm wondering if it's in the steering column, and since previous owners ran wiring for a trailer it's probably screwed up. I will check what you suggested, got busy with another rig. Thank you.

[basketcase0302]

fishorcatchbait on Tue May 29, 2012 12:56 pm
I'm wondering if it's in the steering column, and since previous owners ran wiring for a trailer it's probably screwed up. I will check what you suggested, got busy with another rig. Thank you.

I might be wrong but I don't believe our rear parking lights wiring runs through the steering column. I'd start by checking the brown parking light wire for power where it exits the cab by the DS firewall.



Edit: It's wire #285 that leaves the headlight switch and goes through a few connectors to the DS rear-then onto the PS rear.