KDD896

Well just when I get ONE THING FIXED SOMETHING ELSE pops up. Now my pass, side seat won't raise up i took the cover off and found that I had burned wires from the head rest to the motor.I ws putting new head rest motors in both seats when I layed the seat back to get the head rest off, then it would not go back up.My question is this I can buy a seat off ebay for $120 while merc,wants 97 for the cable and the hassle of trying to route that SOB or could it be the seat motor itself. as the seat goes front back wil adjust but the back want come up.