I'M WISHING TO REPORT AN INCIDENT THAT OCCURRED MAY 28, 2010. I FEEL THIS IS IMPORTANT BECAUSE OF POTENTIAL SAFETY ISSUES. I HAD A TRAILER LIGHT MODULE INSTALLED ( PRODUCT NUMBER 13493) BY A UHAUL REPRESENTATIVE IN OMAHA, NEBRASKA . I TOOK THE 2006 JEEP LIBERTY HOME AND HOOKED UP MY BOAT TRAILER TO THE NEWLY INSTALLED MODULE AND CHECK TO SEE IF THE SIGNAL LIGHTS. ALL OF A SUDDEN I SAW SMOKE. THE SMOKE CAME BILLOWING OUT OF THE REAR LEFT SIGNAL LIGHT AREA. FORTUNATELY I HAD A GARDEN HOSE AND STARTED SQUIRTING WATER ON THE SMOKING AREA. IT GOT BAD ENOUGH I CALLED THE FIRE DEPARTMENT AND PROCEEDED TO DOUSE THE SMOKING AREA WITH WATER. AFTER SEVERAL MINUTES I GOT IT UNDER CONTROL. I IMMEDIATELY RETURNED TO UHAUL AND ONE OF THERE REPS PROCEEDED TO INSTALL A NEW MODULE. SHE ALSO CHECKED THE CONNECTOR ON THE BOAT TRAILER AND REWIRED IT TOO MAKE SURE IT HAD NO SHORTS. SHE CHECKED FOR BLOWN FUSES AND FOUND TWO WHICH SHE REPLACED. SHE BEGAN TO TEST THE MODULE WITH LIGHTS ON, BLINKERS ON ETC. ALL OF A SUDDEN THE NEW MODULE BEGAN SMOKING AND SHE DISCONNECTED IT. SHE TOLD ME MY TRAILER HAD A SHORT IN IT. I WILL BE GETTING THE TRAILER CHECKED FOR WIRING PROBLEMS. FORGIVE ME FOR USING ALL CAPS BUT I WISH TO EMPHASIZE THIS. MY MAIN CONCERN IS: THAT IF I REPAIR THE WIRING ON MY BOAT TRAILER AND SOMETIME IN THE FUTURE THE TRAILER WIRING WOULD SHORT OUT I'M IN A SITUATION WHERE I COULD HAVE A POSSIBLE FIRE AGAIN. THERE IS A POSSIBILITY THAT THE MODULE HAS AN UNKNOWN DEFECT WHICH