Hello again. I have read up on previous heater issues and removed as instructed. The problem I have is that there is no voltage present at the 4 pin connector and a relay (green one) adjacent to the blower housing has signs of burn/heat damage on one of the spade connectors. Can anybody tell me why i'm getting no voltage at the connector? All the fuses appear to be ok and the fan turns when connected to a 12volt supply. Thanks in advance for any replies.