I have a 1987 Nissan Maxima that has a power window problem.  None of
the switches on the drive side control panel (located on the door)
will work.  If I open the door all the way I can get the windows to
operate.  When I start to close the door while holding the window
switch, up or down, the window will stop operating.  This is true for
any window in the auto operating from the driver control panel.  When
the driver side switch is having the problem none of the other door
switches work (located on the other doors). The power door locks are
also affected.
Some times if I open the door and slam it shut I can get the power
windows to work for a short while.
If I open the door and play with the cable that comes from the engine
compartment to the door I can get the windows to operate.
I have changed the control panel  - at quite an expense - but that is
not the problem.  It seems to me there is a loose, or broken, wire
some where in the system but I do not know how to track that one down.
If anyone knows which wire it could be I'll jumper it in and see what
happens.
Any suggestions?

Thanks for you time,
Confused