Shifting

[seabob4]

I would guess Hurth or B-W.  There is usually an ID plate on the side of the body with the make, model, and gear ratio.  If nothing is there, or it's just plain unreadable, I can post this pic on THT, those guys will know...

[manifishdestiny]

I doing more research it looks as though it is the transmission temp switch which both terminals are broken off. It also seems the ZF has the same type of switch but not sure about other makes of transmissions. Also there are two terminals but I have only one black wire. All diagrams I saw show a brown wire as well. I do not have a brown wire. Any ideas?