OK, here it is. An actual accurate as far as I know schematic for the old Terex PT-100F Forestry model. This is different from the regular NON-forestry PT-100 . Note reversing fan fuse, relay, wiring etc. Door switch is shown as non-optional unlike the other version. I corrected the alternator which showed it wrong just like the other one. Note Forestry has a dedicated safety plug for the seat and seat belt switch harness vs the nonforestry having the wires mixed into the regular cab harness. There are also numerous other differences. Here is a fuse box diagram for PT-100 Forestry units. It is MUCH different than the regular PT-100. Forestry units have some fuses in different locations and there are more relays and they are in different locations as well. Seems like when everyone has issues with temperature gauge, they convert to direct read or after market car gauges. If you want to keep it factory.... Temperature Sending unit for stock gauge is ASV Part # 2040-0161 or Perkins Part # U5MK1091 This a one wire sending unit so if you don't already have it, you will need a mini harness that plugs into the two prong connector. It's ASV Part # 0201-765 and is around $20
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