Im thinking you have bad relays — maybe the switches were bad also. when you have one trimming up (or down) by itself and you hit the “opposite” button, then you feed hot to that relay also, breaking the internal ground in that relay, and it will stop the trim from running. releasing that button allows the relay to make ground and activates the trim motor.JohnJones Trolling Motor Services870 773 3474Motorguide/MinnKota/PowerPole/Lowrance/Humminbird