Hello,
I have a 93 E350 Cube Van with non-functioning tail lamps. I was wondering if this is a common problem that is a bad ground or something of the sort. I Jumpered the lights to the orange power wire to check the bulbs and the wiring from the fuel tank connector back so the bulbs and wiring from this point back are good. I also checked the fuses and headlight switch which are also good.
Any help is appreciated
Thanks,
John

 

I would try running a new ground. Bad grounds are a common problem.

 

if its not a fuse or the ground i would check the break clicker. iv changed two one in my brouther-in-laws truck and one in a van. two different makes of vehicles. it should be located around the break peddel. in the van it took 5 min in the truck we had to take out the stearing column good luck
ps this is if you dont have break lights