I have a Terex TA30 with Zf tansmission. Were having the tranny rebuilt but upon pulling the TCU we found a jumper wire added into the truck side of the harness. It connects wires labled "WT" and "X 1:55". the jumper wire has a spade end crimped on so it can be disconnected. Wondering if anyone can give some info on what those wires are and if they should be connected and why? Thank you