Just purchased a new Crownline and the hour meter is place in the engine compartment on the back of the boat. It is showing approximately .4 hours, but I have put around 10 on it and it hasn't moved. I took the screws out of the meter to pull it off and make sure there were none that were not connected. There are two wires in it; a yellow and purple, but there are two other wires there not hooked up, which are yellow and blue. Any ideas?