Following a suggestion I read in this NG I purchased an illuminated
electric window switch to replace my (non-illuminated) sunroof switch in my
E28 M535i. I plugged it in and hey presto she works... sweeet!

Just one problem... went down the pub last night for half-price steak night
and unfortunately noticed in the dark through the window of the locked car
that the switch remains illuminated *all* the time regardless of key or
door position. Obviously this is a situation I would rather not have as the
battery and/or the filaments in the switch are not going to last very long
being permanently illuminated.

It would appear that my sunroof remains permanently powered. I have always
been able to move the sunroof without the key or with the front doors open
or closed. I now want to wire the sunroof power into the same circuit that
the windows are on - ie. they only operate with the ignition switched on or
with one of the front doors open.

Where does the sunroof power loom run in my E28? The car is RHD and I know
the electric window loom is in the footwell behind the loudspeaker and that
the relay for the front door jamb switches is behind the drop down valance
under the steering column because I had to find that when I installed the
relay for the windows to operate on the front door jamb switches.

Or is there an easier way to prevent the switch from remaining illuminated
all the time?