Power Windows AND Sunroof do not work

[Mark Pollan]

Hi:

I have an '86 5KCSTQ with 312K miles and recently both the windows and
sunroof have stopped working.  Initially, I was able to get the windows
working by turning the ignition off and then back on.  Presumably I was
resetting something.  I thought the circuit breakers so I replaced them.  I
have checked thoroughly all the wires running through the door.  I pulled
the auxiliary relay panel and am getting power to the control unit (position
4) as there is an audible click.  The left hand circuit breaker on the relay
panel is getting some power but I am only reading 3.6V.  The right side
breaker has no current whatsoever.  Likewise the power window relay
(position 5) is silent.  It is going to get hot here in D.C. pretty soon and
would like some ventilation so if anybody can offer any suggestions I would
be most appreciative.

My initial though is the control unit is bad but having said that, I welcome
all comments.

Regards,

Mark Pollan
'95.5 S6
'86 5KCSTQ
'00 BMW K12RS

P.S.  Anybody have a spare control unit?