I recently bought my truck used and cannot get my orange marker lights working. There are four on the front bumper, and three on each side underneath the doors. Only one light works, this one on the front. I'm new to all of this but trying to learn, so does anyone have any ideas how to fix them???

 

Did you check the bulbs? Pull each bulb and check for corrosion in the socket. Take the bulb that works and check each socket with it. If it works in all the sockets it's the bulbs.
Also check the wiring for any cut wires.

 

Thanks. Thats probably it cause the lights are probably from '98 now that i think about it.