3 things may cause this:
1) you may have melted some wires (are you blowing fuses)
2) loose or no grounding at turning lights
3) bed light connector or wrong light bulb
Most likely it will be second, its a most common problem
1) you may have melted some wires (are you blowing fuses)
2) loose or no grounding at turning lights
3) bed light connector or wrong light bulb
Most likely it will be second, its a most common problem