I have a 1993 60 hp Merc with a tilt motor that only runs if I hot wire it to the battery. I tested the wires going to the motor and there is current however not enough to power the motor. I cleaned the grounds, changed the solinoid which does click and have had no luck. The motor is two years old and seems to run fine when wired to the battery. Can it be the switch on the engine? Any suggestions?