Fitted the Hella switch unit to the rear screen heater, now have matching switches with illumination when on and off.
You can get them
HERETo remove the old switch. Unscrew the push/pull knob, then unscrew the metal collar on the front of the dash.
Using the existing wires, connect them up as follows.
Wiring them up this way, the switch will be dimmly lit when the ignition is on but the switch is off, so you can see it in the dark. Then brightly lit when the switch is on.
The black wire that is left over is another 12v switc h wire coming from the ignition. Tape this up, to prevent it accidentally shorting out, as it's not needed.
Then screw into place using the existing hole.
Just need my sticker sheet so I know which one is which.
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Ginger man without a ginger van