Got a fix-it ticket the other nite. Tail-light was out. Changed the bulb-that didn't fix the problem. swapped-out the plug the bulb fits into, and that also did not fix the problem. The brake light works, but tail-light does not. right side only. left side working fine.
Anybody have a clue?

 

Check under the rear of the truck for damage, broken wires or eaten by squirrels wires. I had chewed wires from squirrels and when I fixed it I liberally coated all my underneath wires with Tabasco sauce, squirrels don't like Tobasco sauce.

 

thanks, no damage

 

Check for a poor ground. I know your brake lights work but you could still have a poor ground connection.

 

ok, thanks, i'll check... how do i do that?