There are separate fuses for trailer signal lights in main fuse panel
Believe it or not, I have had to disconnect the cig lighter in order for the tail lights to work. Sounds far fetched but it does work!
If the turn signal lights come on but will not flash you have a defective flasher relay. Replace the relay.
Could be the control stick for the blinkers. If the lights work, try replacing the stick or checking out the signal path for that blinker
turn signal flasher
One of four things can cause a turn signal not to work. Either the turn signal switch assembly, a bad bulb, a bad fuse, or a bad turn signal flasher.
No this isn't the reason why your tail lights don't work. Tail-lights and the turn signal are two different systems in the car: if your turn signal is broken that doesn't necessarily mean that your tail-light will be broken.
Check the signal light fuse, the signal light relay, and the signal light switcher.
Turn signal flasher?
Your problem is most likely the turn signal relay im having a problem similar to yours but when my signals wont work neither do my hazards
The whole turn signal arm unit needs to be replaced
The Turn Signal Switch is bad in the column and needs to be replaced.