This is definitely a strange issue but I was able to find a similar issue on a similar truck. With having the multiple reverse lights there could be a couple issues you are experiencing. I would start by disconnecting one of the lights and the diodes to ensure the truck does not feel like to much power is being pulled by the reverse lights. While they are only LED lights some light bars still use a lot of power as the lights will have a very high lumen output and use more power than many... view full answer...