I have a new truck bed cap. I need to wire the cap's dome light and third brake light. As such, the cap has four wires (supply to dome, ground from dome, supply to brake light, ground from brake light).
I plan to power the lights from the tail light harness (drive side). My question is, can I splice the two grounds (from the dome light and from the brake light) together, and tie to a single ground (i.e. to the ground wire in the tail light harness), or do I need to tie them to separate ground sources (i.e. multiple points on the frame). Thanks!