I don't have any tail lights brake lights, and turn signals. i dont know what fuse or relay to check or replace, because I dont have a owners manual to cross reference. Oh my vehicle is a 1997 ford expedition.

There are a few possible reasons why your turn signal light is not working while your brake and tail lights are functioning properly:

1. Blown fuse: The turn signal lights are connected to a different fuse than the brake and tail lights. The fuse for the turn signals may have blown and needs to be replaced.
2. Turn signal switch: The turn signal switch, located on the steering column, could be malfunctioning and needs to be replaced.
3. Wiring issue: A wiring issue, such as a broken wire or loose connection, could be preventing power from reaching the turn signal lights.
4. Flasher relay: The flasher relay is responsible for controlling the turn signal lights. A faulty flasher relay could be preventing the turn signals from working.
5. Signal/light module: Some cars have a signal/light module that controls the turn signals, this could be faulty and need to be replaced.

could be the brake sensor, behide your brake pedal.

could be a glitch in the front power controll modual disconect the battery wait couple minuts reconect and see if thay come back
also replace the bulbs even the one on the cab your therd brake light alot of ppl dont relise its out and it will help determin if its in the tail lights or its in the brake switch if the therd brake light lights and the tails dont replcae the switch after inspecting the tail light conectores for corotion

The turn signals and brake lights use the same circuit and filament in the bulbs. The tail lights are on the other circuit which comes from the headlight switch.
Do you have power on the tail light fuse ?

There are several components of your 1997 Subaru Outback that can cause your tail lights to stop functioning correctly. To help pinpoint the cause of the problem, it would be very helpful to also check your front marker lights. If the marker lights are working, then we know that the problem is not the headlamp switch or the tail and illumination relay (located in the fuse and relay box).

The components to check are:

> Fuse #23 (20 Amp) in the Main Fuse Box.
> Fuse #5 (10 Amp) in the Fuse and Relay Box
> Tail And Illumination Relay
> Headlamp Switch

hi think its more like a blown fuse tail lights dont normanly have relays as they dont draw a lot of wattage.dash lights are on the same fuse system as tail lights its a way of warning the driver that theirs aproblem

check for power at the wires going intop the tail lights, real common that the circuit board is bad, but unlikely both at the same time. The tag, tail lights and brakes are 2 different systems. Do the turn signals work normally? if so the wiring from the turn signal switch to the brake lights is GOOD. the stop light switch had\s a ORANGE wire that should have 12V if not ck STOP LPS fuse, when brake pedal is depressed, the WHITE wire is 12V (at the stop light switch) if that is OK, the turn signal switch COULD be bad. The wiring harness plug is near the back left under the tailgate, see if that is disconnected?

I've worked on these the first drove me crazy. its the turn signal switch every thing runs thru these. head lights, turn signal, brakes. except the third brake light. it runs directly from the brake switch. go figuare

first you need to check the ground connection of the tail lamp, poor ground connection might be the cause. about the turn signal, clean the turn switch using contact cleaner spray. If this cannot solve the problem. The switch have to dissmantle and service manually.

create your own earth wire off the original and screw/bolt to a good earth source.Nothing flash just a test if it works make a more permanant one