Tail lights and running lights won't come on fuses good changed head light switch still no running lights brake lights and turn signals fine.

Did you change the radio recently..if so you tapped into the wrong wire...and if not then I would say you have a bad headlight switch or a broke ground dome where

Check relays

Yes, if your turn signals in the back use the same filaments as the brakes, the multi-switch must allow the brake signal through when the turn signals are not activated. There are multiple diagrams for your system, so I'm not sure what you have. If you have the light blue wire that goes from the brake switch ul the column to the turn switch, make sure it is getting power when the pedal is pressed. It should go thru the switch as shown in the second diagram below.

I would check for voltage at the turn signal switch. The brake lights go thru the turn signal switch, except for the high mount light.

COULD HAVE FAULTY BRAKE LIGHT SWITCH OR BAD GROUND WIRE AT BRAKE LIGHTS AND TURN SIGNAL LIGHTS.

Sounds like a blown fuse or a ground wire broke.

Look at fuse #18, a 15 amp fuse, in the fuse block. This fuse powers both the tail lights and instrument cluster lights. Usually both of these light systems are powered by the same fuse so when your cluster isn't lit up you'll know right away that your tail lights aren't working as it's not safe to drive without tail lights. Your brake, turn, and head lamps are powered by different circuits. Hope this helps and good luck!

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

could be brake light switch but i would be more inclined to think the signal switch is bad, the brake light circuit goes from the pedal to to the turn signal switch then to the taillights

All the exterior lights run threw the turn signal switch. Except the high mount brake light. If you are talking about brake lights replace the TS switch. Parking lights are a little different. If you have no parking lights front and back, TS switch. If you have front and no back, ground problem. Grounds for the back are usually on the drivers side mounted to the frame.