[T3] Add'l Hella intermittent wiper control unit info

[Will McCreight <whmcc@attglobal.net>]

<x-flowed>Just found this tidbit in a google search of an aircooled newsgroup in 
reference to a Type 2...at least it lets me know that there is 
"feedback" from the wiper motor telling the switch when it is parked, I 
think.

*" *Right -- timing won't work unless the circuit knows where "park" is, 
and
how long it will take for the blades get there. The 71 wiper motor has a
cam with a switch, set up so that when the dash switch is set to "off,"
power continues to be applied to the wiper motor until the blades are in
the park position, at which time the switch opens and power is removed.

One hopeful sign about the kit that I have ordered is that its wire
connections have the same numbering as the wire connections shown on the
bus wiring diagram: 31 (ground), 53 (high for slow wipe), 53b (high for
high speed wiping), and 53a and 31a -- which are the contacts of the
cam-driven parking switch."

--
Will McCreight
whmcc@attglobal.net
Portland, OR
(208) 661-6262 cell

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