Thanks guys. I checked all wiring and connections, they are good. I can swap it with the unit on the trolling motor and it does the samething (on for a few seconds, off for a few seconds). The trolling motor unit works fine in both spots. I just got a return email from Lowrance, and they say they will replace it with a rebuilt one for $350. Do you think this is worth it or should I look for something new? Im not sure what else I could get for that price and I dont have a lot of $$$ to spend.Thanks again.