Full disclosure: I'm a complete novice with electrical engineering.
I'm trying to wire a lightbar to my 2015 Jeep Wrangler Unlimited Sport.
I wired red to red and black to black between the lightbar and the wiring. I bolted the round connectors to the car battery (black to negative terminal, red to positive terminal). I zip-tied the relay to the body of the Jeep.
I tried the toggle switch with each fuse. Only the purple fuse (labeled "3") turned the light on, which was only for a quarter second. The other fuses were labeled 5, 5, and 7.5.
I'm not sure why all fuses burned out. Did I wire something incorrectly? Are the wires not compatible? Do I need a larger fuse?