Rottie1, check all your connections. You could have a bad crimp or even a broken wire in the insulation. Especially check the positive wire going to the ehc. Unhooking and re-connecting could have just move things and made contact again. Also unhooking and re-connecting could have reset the ehc which could be the sign of another problem causing the ehc to kick out. But start with the simple things first, also check the connections at the ehc for corrision caused by moisture getting in there and while you got it opened up coat everthing with dielectric grease. Also like said earlier you can by pass the key switch to rule it out, I did with a simple toggle switch temporarly then replaced with an HD switch. Hope this helps, let us know what you find.