so i was putting in some rock lights under the back of my truck and i was going to wire one into my back up lights to brighten things up. i spliced into the positive wire to the bulb, checked it with my test light and it worked, i ran the wire under my truck hooked it all up, claimed i was finished. then i turned on the truck, put it into reverse and nothing, now none of my back up lights work. i cant find a fuse anywhere and it doesnt show one in the diagram i have. does anyone have any idea whats up?