There's only panel/instrument illumination in that connector -
(the above diagram shows the connector 'face')
Cavity 2 - UY (Blue/Yellow) is the control wire to the levelling motors (see note below)
Cavity 3 - B (Black) is earth (for the switch's illumination)
Cavity 4 - RO (Red/Orange) is the switch's power feed (from the lighting circuit)
Cavity 5 - RO (Red/Orange) is the switch's illumination feed (from the lighting circuit)
The UY wire is of no use for anything else - unless you want to fit LED spotlamps.
The UY wire from this switch splits at header C0288 and goes to each headlamp.
As it is only 1.0mm² cable, it's too small for Halogen spotlamps, but would be fine for LEDs.
I have mating male connectors for the levelling motor connectors, that could be used to pickup live and earth.
The RO wires in cavities 4 and 5 both go back to a common source (header C0290)
So, the only useable circuits in that header are the earth and illuminations in cavities 3, 4 and 5 (all on 1.0mm² cable)
If you want to use it without cutting the wires, I can supply a mating male connector.
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