Re: Tilt/Trim switch not working but does on motor??
Since it doesn't work in either direction, my bets are the switch is ok and the 12V feed to that switch is missing or else the main harness connections (the big plug) at the engine needs cleaning. Pull it apart and reconnect several times. Bet it comes to life. Otherwise, a voltmeter is your best friend in these situations. Armed with that and a schematic you can locate the problem in minutes.