My 3135 has a cab but I could see the seat safety switch wiring but could not see where it was routed from. Came out from the middle of the back of the seat and went down and around the right side of the seat and disappears.
You obviously need to find that wiring harness. I will search my manual for a wiring diagram.
You obviously need to find that wiring harness. I will search my manual for a wiring diagram.