Me and the switch are on intimate terms
The back of the switch is easy, further into the loom looks like it's fairly hard to get at, the components connected which i've checked by checking for an open circuit on pins 9 and 12 of the diagram TB posted yesterday are...
The ashtray, snow switch, gear selector lights (autobox) climate control panel switches, door leccy window switches front and back, cigar lighter and light at the rear, instrument panel, radio is out anyway all switches above radio.
each one returns and open circuit on the above pins of the switch (loom side)