3 more UrQ questions!

[-=Bob=- <mx@snet.net>]

Well, Im wrapping up the engine compartment and everything seems to be
going OK. But I have more questions...

1) Above the oil pressure sending unit on the block there is another
sending unit. There is no wire on it.. What does it do? Wheres the wire?

2) The Sending unit on the back of the head near the thermo time switch
(Temp sender for the "cold engine light")  doesnt appear to have a wire
anywhere near it.. Anyone know where this wire should be coming from?

3) The thermo-pneumatic valve has two outlets.. One side goes to my
intake, what about the other side? (they are colored)

BONUS ROUND

4) The vacuum plumbing under the fan motor for the injectors... how does
it route? Where does it go?

Thanks for any help.
For the record, I got the car with the engine bay pretty well
disassembled. If I had taken it apart, I would have had some notes to go
by!

Bob