[T2] 3 terminals to my solenoid in 75 FI bus

[MUTS]

Reinstalled engine after an oil leak ( trans-shaft seal- the throw-out 
bearing was oily.) and also found why cold start valve did not seem to 
work (hard starting)- its wire from the starter was worn through in the 
harness above the starter where the harness tab had vibrated it. 
According to Ratwell's FI double relay diagrams and also Bentley, I know 
it go to the upper terminal (50?)on the starter (where the wire from key 
arrives).  My solenoid also has a lower terminal not mentioned in 
Bentley- any one know what that was for?

MUTS  = Michael's Ultimate Thumb Saver oboe, clarinet support
93 Chevy Roadtrek 210P
78 VW Westfalia Camper