I have an electrical short I believe, but cant find it. I have trim button on motor, steering wheel, throttle lever, and at bow. On all three, the motor will trim down, but will not even put fire to the trim motor if pushed up. Several times while messing around my boat, mowing, etc., I hit the trim up button on any of the four, and it will hit, and trim up. I let off, and its dead. Any ideas? Where is there a common tie in for all these switches? Got to be a common problem to not work all four buttons. Any ideas? (Remember, it works “sometimes”)