I have a Mitsubishi truck outfitted with a Uhaul wiring kit put on about 6 years ago. <br />Worked fine, but now only the tail lights for the trailer will light up.<br />No turn signals or warning lights.<br />Tested trailer lights with tester, they test fine.<br />The Uhaul trailer kit has a converter connecting it to the truck wires. Do I need another converter in order for the lights to work?<br />In other words, can I just buy a wire kit from the store and hook it up?