Clark IT60 Wiring Diagram

A friend of mine had some tweekers come through his yard stealing anything metal and they stole the radiator and cut out all the wiring on this diesel forklift. The thing is older than my kids and I haven't been able to find anything on it and was wondering if anyone might suggest a place to look or had a schematic.

I know we can figure it out with enough time but was hoping to short cut the process a little.

Thanks in advance.

John C.