Hello, I have a 97 eldorado with a tailight problem. My rear left doesn't get bright when i turn on my turn signal or hit the brake. My fron signal works fine, and the right light get brighter with the brake along with the third brake light. i have replaced all three bulbs twice, checked and cleaned the connectors, removed the ground, sanded the chasis and reconnected the ground. the fuses are checked and are fine, I have now idea what else I can do to correct this problem. -Thanks in advance

Look Behind the triangle panel on the left side of the bike. Next to the battery. FUSES

Sounds like a short in the socket or a bad ground.
The parking light is one circuit and the brake turn signal is another.

More likely that the turn signal switch assembly is bad.Have someone watch the tailights(or use a large mirror) to see if the bright tailight filaments come on with the brake pedal held down while you wiggle the hazard light switch.

hello same pronlem with my 98 durango but right turn signal!

what it was is the 4 pin connector for the tow package had the insulationripped off them i guess whe backing out of a steep driveway it sxrapped! so the headlights, turn signals, and brake circuits where grounding out! quick fix!

just cut and capped that mess!

good luck

The tail lights are also called parking lights.
There is a 10amp fuse for each rear parking lamp. The fuses are in the rear fuse box. Your owner's manual will tell you where that fuse box is located.
The fuses get power from a park lamp relay.

Bad earth on the wiring of either the stop lights or the indicator bulbs at the cluster

This is a tough one with out being able to see the wiring. i will enclose a wiring diagram for the complete lighting system.
You will need to locate the correct wirng and make sure its going to the correct light. Most times a bad ground wire will make the light do funny things like your car is doing. With the diagram i enclose locate the ground wire to the rear lights and make sure ground is good, even if you must cut old ground out and run a new ground to a good metal ground.

Yes. But do you have seperate yellow turn signal lights in the rear or do the turn signals work independant of the brake lights? If yes then you need to wire in a taillight converter. It takes your seperate left & right turn signals combines them with your brake lights on 2 wires instead of 3 leaving you with your normal 4 wires in total instead of 5. 1 Left turn & brake light. 1 Right turn & brake. 1 Taillight. 1 Ground. = 4 wires in total. If you dont have seperate rear turn signals just find left turn wire in taillight assembly, Right turn wire & Taillight & a good ground & you are done. On trailer plug yellow is left, green is right ,brown is tailight & white is ground.

Looks as though you have earthing problems.
I would make sure that the earthing is O.K on flasher and brake.
You would then find your symptom disappear.

Hope that sorts it.

Sounds like a wiring problem . Electric is feeding across from brake light ,probably a bare place in the wiring. Check behind the tailight.