Where could i get one? I need one for my 93' xj. also what's a good ohm's meter to test all the electrical stuff on my jeep? can't figure out the 02 and coolant temp codes i'm getting. Very wierd symptoms. runs perfect but as soon as the check engine light goes on (after about 10 min.) the RPM's go a bit high when the car is moving (but not in gear). RPMs go normal after a complete stop. This is all while not in gear....