Hmmm very odd... The wires are not polarity specific - are you sure you're sending them to the right place? One is to engage the locker, the other plug is a switch that closes when the locker engages.
Hey I just wired up my dana 44 in my sport model and I keep blowing fuses everytime I try to engage the locker. Are the wires polarity specific ? I didn't think it mattered which went to power and which didn't.