I have had my GO 740 for less than 6 months and noticed my power connection was defective. I started to clean it and found that the copper pads were bad. I am looking for a replacement window mount and cigar lighter plug in. Ebay has them for $50-$60 but i can buy a new unit for almost that much. Anybody have a bad GPS but retained the mount and cords? If anyone has the wiring diagram of the active window mount, I can attempt to rewire it.