So, I realize this is a common problem, but here is my situation. 2000 jeep wrangler 4.0, ac fan not working on any speed. I have looked at and replaced the fan speed control knob, blower motor resistor, blower motor, and lastly the blower motor relay. None of the connections looked burned, a little dirty but not to bad. I have full power to the blower motor as soon as I turn the key on of grounded to body but no power using the negative in the plug for the fan. I tried bypassing the ground at the blower motor relay but still no luck. Should the relay be clicking or something, because not a peep from the new or old one. Someone blew up my volt meter so I can't check continuity till tomorrow :/ thinking it has to be some kind of loose wire on the ground side of the blower motor... Thoughts?