I have a bait well pump and it went bad. I changed it out with the same brand and unit ( Rule 1100 with the changeable pump motor) I have done this a few times and it always is fine. This time though, the pump runs a few minutes them the breaker on switch for the bait well pops' I reset and the motor will runs for a few minutes and then the breaker pops again. I checked the wires aren't crossed. The only things different I did this replacement was to put dielectric grease on the pump wiring. Would that make the circuit throw ?