I'm working on a project that activates two motor propellers in a salt water tank in order to make waves, and I'm trying to use a sun hold relay 0510 with a 12f683 pic the output of the pic is connected to a led that's connected to a resistance that's connected to the base of a transistor the collector is connected to the coil of the relay and protected with a diode placed with the negative side to 5v and the emitter is connected to ground every thing works well until I connect the 120 v AC motors the relay starts to tick and not do what its supposed to do. If some one has done something similar I would appreciate some tips.