I have a 1978 115 evinrude that the t&t quit working on. Came back from fishing and put motor down to flush. 2 days later it won't go up. Solenoid just clicks. Thought this was strange but bought a new one and installed. New one does the same thing. This is a 3 wire setup hooked up to a single solenoid mounted inside boat. How can I test and be sure the problem is or isn't the trim motor?