I have a 2000 trailer and the tail lights went out. I%26#039;ve changed the swiches, the cables, and even one of the light bulbs to see if that was the problem, but nothing works.|||Bad ground or broken ground wire.|||Maybe they%26#039;re old|||check and make sure it is plugged in correctly,if you pulled on the wire to unplug it then probably have jerked the wires off the pins or pulled the pins out of the plug|||#1 cause is bad grounding
#2 reason is a bad bulb
