I had Hitch City do my boat trailer hitch and electrics in 2009. I put my boat into storage in late October 2014 and the trailer lights didn't work. I suspected that the module had gone. Hitch City were busy doing snow removal company work and said the appointment would be 6 weeks. In April 2015, I phoned to make the appointment and was told to bring it any time that was convenient. I took the car the next day and told them, I suspected it might be the module although there didn't appear to be any power at the module. They checked the wire from the battery and found a section that had split and corroded the core. This section was replaced, the wire re-routed in about 20 minutes. Not only did the NOT CHARGE ME, they gave me a cover for my tow bar! Not often you come across service like this. Thanks Hitch City, Mississauga.