1984 buick riviera tail/brake/turn signal lights and the gas gauge wires eatin by rats

SOURCE: Trailer lights have two wire out of each fixture

One wire is for the brake/directional filament and the other wire is for the tail light. The fixture should be grounded when it is attached to the bracket. To test which is which (the brown wire is USUALLY the ail light) make sure the fixture is grounded and touch a hot wire to each of the wires coming from the fixture. Watch to see which wire lights up the brighter filament and this is the brake/directional light. The dimmer filament if the tail light. Brakes lights and directional lights are both the same filament. Wen the brakes are applied, both lights are activated. When a direction light is turned on, it simply flashes the brake light filament.

SOURCE: Brake light, reverse light and turn signal issues

Hello. The symptoms you are describing are likely due to a poor ground. Temporarily install a new ground wire by securing a piece of copper wire to the frame with a self tapping screw. Use this ground wire along with the hot wire to see if each of these lights works. If it does, trace the ground wire back to the frame, unscrew it and clean up the metal with emery cloth so you reestablish a good ground.

SOURCE: brake wiring diagram chevy lumina

why not just replace the turn signal switch must faster and safer . buy one from your local parts house then you can see its not that easy to install but you can do it with a little help

Colin Stickland

• 22516 Answers
• Posted on Feb 19, 2009

SOURCE: 89 Chevrolet K1500 tail light issues

change the brake light switch ,or rewire the whole lot to europeon standard where its all seperate.Stupid american idea where the brake light is used as the indicator as well.Had a few like this to import and had to rewire the whole rear back lights as their is some fancy brake light switch on these cars with a whole lot of wires .i just cut the whole bunch and rewired the lot as our regulations do not permit this type of concoction.best of british with it though as although its not difficult to do its amazing how many so called mechanics run when they more than two wires

SOURCE: tail light wiring connectors and wiring diagram

A test light checking each connector would be faster and easier to do. Maybe somebody may have a illustration for you but by far a simple test light is all you need with a helper turning on the different lights as you check them out and writing all your findings down