which wire is which on back lights
 

I had a electrical short somewhere and my running lights do not work so i have to rig up at least my tail lights to be on a switch so the running light part of them work... so people can see me.

i got my back light off but i do not know which wire is the one to turn on the running lights.

there is a yellow, brown, and a black going to the bulbs.

can anyone help me out? i just need to know what does what so i can set up my switch and drive at night!

thank you so much!... really sorry about any spelling! :)

im not sure what year is yours but on mine which is a 98 yellow is the parking lights black is the ground and yellow is the stop/turn signal.info crtsy of alldata

You used yellow twice.

I wish I could remember from wiring my tail lights in. If you have a wire tester that's always the easiest way to tell. :icon_shrug:

here ya go.. would be better if we knew the year and all though
http://i4.photobucket.com/albums/y11...blazertail.gif

On my 2001 blazer it is the brown wire on the right rear side that powers the running/tail lamps. The brown wire switches to brown-white as there is a connection plug for the right side just inside the plastic trim panel on the inside of the vehicle near the right side lens assembly.