No brake or tail lights - 2000 Chevrolet Venture

If your 2010 Crown Victoria has functioning headlights, brake lights, and turn signals but no tail lights, the issue could be with the tail light circuit or with a specific component in the tail light assembly.
Here are a few things you can try to troubleshoot the issue:

• Check the tail light fuses. Make sure that the tail light fuses are not blown. Check the vehicle's owner manual for the location of the fuses.
• Check the tail light bulbs. Make sure that the tail light bulbs are working properly, if not replace them.
• Check the wiring. Make sure that the wiring for the tail lights is connected properly and that there are no frayed wires or broken connections.
• Check the brake light switch. The brake light switch is responsible for turning on the brake lights when the brake pedal is depressed. Make sure the brake light switch is working properly.
• Check the turn signal switch. Make sure the turn signal switch is working properly, and properly wired to the tail lights.

If the problem persist after trying the above solutions, It would be best to consult a professional mechanic or an auto electrical technician to diagnose the issue, as it could be a malfunction in one of the electronic module that control the lighting. It's a good idea to take the vehicle to a dealership or repair shop that specializes in Ford vehicles. They will have access to the wiring diagrams and repair information needed to correctly diagnose and repair the issue with the tail lights.

Is it the brake light or the running lights, are all the lights on went the ignition is in the off position and the light switch is in the off positions aswell or the brake lights are on including the third brake light?

cheek you brake light switch it's under the dash.. if it goes out it kills brake and tail

The circuit to the taillight brake bulbs goes through the turn signal switch. Sometimes the switch can cause this problem.

there must be a short circuit which powers tail lights and brake lights. probably you have a dual filament bulbs which have both brake and tail light together. check for bulb, socket/or bulb housing and harness of that light.

does the high mounted brake light work? the brake switch has 2 contacts one for the high mount (LT BLUE/BLACK) and one for the tail brake lights. The tail/brake light wire is LIGHT BLUE. the main connector between the brake light switch and the tail lights is C208 which is located behind the rear seat, left side. So if there is power coming out of the brake switch OK and no power at the tail lights, check that connector. Hope this helps.

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

The rear tail light switch in the circuit. Remove the switch from its connect and bypass the the terminals on the connector with jumper wires and see what happens. If when you by pass the switch the tail and brake lights work you found the culprit.

The tail lights working would not necessarily mean that the brake light bulbs are good. If they are the type that have a double filament (ie: one filament for the tail light and another filament for the brake light ) the brake light filament could be bad and the tail lights still would work. If they are either single filament type bulbs or double filament type, I would check the bulb, fuses, and contact switch on the brake pedal.

check fuses