My 91 XJ started to make a noise on the way home, I live in vail and have not had a chance to get under the car and really look at it. It sounds like it was coming from the under my feet, maybe the front drive shaft?, I thought maybe I was stuck in 4WD, like a clunk sound , I check my lever on the 4WD and made sure it was up all the way, put it in 4WD and then back to 2WD and the noise was still there. I peaked under the car did notice a electircal plug haning from the passenger side of the transmission, I will not get to look at it untill the weekend just wondering if anyone could let me know what im getting myself into.