WHENEVER USING THE HEATER IN MY 2006 CHEVY PICK UP TRUCK YOU CAN SMELL STRONG BURNING SMELL COMING FROM UNDER THE DASH ON PASS SIDE OF TRUCK . ONE NIGHT TURNED ON HEATER WHILE GOING DOWN THE ROAD AND COULD SEE FLOOR BOARD ON PASS SIDE GLOWING ORANGE AND STARTING TO SMOKE, HAD TO PULL OVER DO TO THE SMELL OF MELTING PLASTIC AND BURNING ELECTRICAL TAPE . HEATER AND A/C NO LONGER WORK SO NOW HAVE NO DEFROST IN THE WINTER , CAN LIVE WITHOUT THE A/C BUT COULD NOT MELT THE ICE IN THE WINTER. BOUGHT AC/DELCO PIGTAIL CONNECTOR REPLACEMENT PARTS AND REWIRED THEM TO SPEC AND TURNED ON A/C AND IT WORKS, ONLY PROBLEM IS THE WIRES GET SO HOT IT BURNS YOUR HAND AT THE TOUCH AND YOU CAN SMELL THE WIRE COVERING STARTING TO MELT AGAIN. IT IS MY OPINION THAT IF LEFT UNCORRECTED MY TRUCK COULD CATCH FIRE IF A HEAVER GAGE WIRE IS NOT INSTALLED TO MAINTAIN THE CURRENT OF THE BLOWER MOTOR. MY TRUCK HAS 39000 MILES ! ! ! *TR