Need wiring diagram for tail & brake light for fxlr 92

Question edited for clarity.
Question moved to model category.

Wiring diagram with colours.

https://www.trailvoy.com/threads/wire-diagram-of-brake-lights.212025/

more here

https://www.google.com/search?q=2003+Chevy+Trailblazer.+tail+light+wiring+diagram

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Hi. Thanks for your question. For the diagram of Tail Light you can visit https://www.reliable-store.com and download the entire workshop manual. It has all the information along with the diagrams for better understanding. Good day!

Both. If the running lights ( marker, tail, clearence, or parking) and brake lights are out since the rain, a tail light assembly is broken and filling with water enough to create a short to ground. If there's no broken lens, whitch normally only blows the bulb. Then, the problem lyes in the trailer light harness. the brown wire (tail) & green wire (left turn/brake or yellow wire (right turn/brake) must be bare exsposed that shorts to ground when wet. all the trailer wires could be smashed together damaged the plastic coating on them. no problem till water shorts to ground. The white wire is the ground wire make its not able to touch the other 3 wires or bare & wet. Tape wires seperate then replace tail/mkr fuse and brake fuse. That should do it.

You will need the wiring diagrams to troubleshoot this, we do not have them here at fixya, sorry. They can be bought used here if you would like

THE TAIL/MARKER LIGHTS, GO FROM THE HEADLIGHT SWITCH TO THE REAR FOR THE TAIL LIGHTS & TO THE FRONT FOR PARKING OR RUNNING LIGHTS. ALL THOSE LIGHTS ARE ON THE SAME CIRCUIT, { BROWN WIRE } THE BRAKE & TURN SIGNAL WIRES GO FROM THE STOP LIGHT SWITCH & FROM THE TURN SIGNAL/HAZARD SWITCH. NO RELAY IN THE TAIL/PARK CIRCUIT. CHECK THE FUSES WITH A GOOD FUSE TESTER.

I can't get my brake lights to work. the rear one in the window works but the tail ones won't work.do you have any ideas as of what to try to fix this problem. Thanks!
JO

It should be in the secondary fuse/relay box under the hood.

www.wiring-diagram.com
You can get any wiring diagram for any vehicle. It will cost about $12 and it's well worth it. It will give you the complete diagram bumper to bumper.

It sounds like your have may have your brake light and running lights crossed on your wiring harness to the trailer. Good luck and hope this help's

YOU MAY NEED A LIGHT FAILURE SENSOR WHICH IS LOCATED IN THE TRUNK ON THE DRIVERS SIDE