Check for a blown fuse - if this is problem and continues to blow fuse you will have to further investigate circuit for dead short or overload
Possible ground issue at the taillights.
Yhese are fed from different sorces so I would check the groiunds on the lights.
did you check the fuse?
I'm thinkin' the headlight switch is at fault.
I'm not a mechanic / technician but I would assume that would be your headlight switch ( I lost my headlights , taillights , and dash lights on my 1971 Mustang one night while travelling on a highway , pretty dangerous )
The fuse is blown. They put the dash lights and tail lights on the same fuse so that if you are driving at night the absence of the dash lights will be made relevent to you in order to get your tail lights fixed.
sometimes the head lights and tail lights may be fused separately,check your fuses.you could have a bad ground.thats just two places to start.
If you call the dealership there is a recall on the rear tail lights. Something todo with the wiring in them..
taillights or brake lights?it is common on many vehicles for the brake light switch (connected directly to the brake pedal) to stick over time. try gently pulling back on the brake pedal with your toe and see if the lights go off.if it is the actual taillights then i would look for a short in the wiring, possibly near the taillights themselves or right at the light switch in the cab.
If you are referring to the brake lights it is probably a bad brake light switch. Your vehicle may also have daytime running lights which would be on without the parking lights.
The brake lights are a separate circuit from the tail lights. If the bulbs and fuse checks okay, I would suspect the brake light switch is at fault.
The obvious would be the bulbs are burnt, then look at the fuses for the taillights, and then the wiring. The holders where the lights themselves plug in are bad sometimes; you can get them cheap at a pick-a-part yard.