tail light trouble

[brucef250]

hey all .. i hope every body is doing fine...i am having trouble with a 1987 f350 ...i just put new led lights on the back...every thing works great ...but with the brake peddle pushed and right turn switch on , the left brake light goes out compleaty...??? i have no clue whats going on ..also the brake lights are only hot with the key in the on position...thanks in advance for any help...bruce

 

[brucef250]

help....anybody....?????

 

[bronc76]

Have you checked to see if all grounds are making good contact at the tail lights? Could be a poor ground or a short circuit somewhere from steering column to lights. You may want to check out the brake light switch at the brake peddle. Not sure if thats a problem, but it would be another place to look.