Today, for Nathan, I customized a MINI circuit so that he can control his MINI driving lights from the (unused) rear fog toggle switch instead of the standard switch installed under the steering wheel:
Nathan bought a full toggle switch panel so that he had the extra unused switch; I cut two tracks on the back of the MINI circuit, to isolate the rear fog toggle signal and indicator LED, and then ran two wires from the MINI circuit to a small connector which plugs into the driving light harness, in place of the standard switch.
Now Nathan will be able to turn the driving lights on/off using the toggle switch, and the tip of the switch will indicate when the lights are “armed” (this modification does not change the functionality of the driving lights, which still only come on with high beam headlights).
UPDATE: Nathan did a write-up on NAM, complete with pics of his installation – nice & thanks!
M&I / GBMINI 
Very nice…too bad I already have rear fogs.
One question, you indicate what the green & blue wires are on the driving light harness, do you know what red and yellow are for?
Josh.
The wires on the driving light switch are:
1 (red/gray) backlight illumination
2 (brown) 0V
3 (blue) 0V when switch pressed
4 (green) 12V when driving lights “armed”
Pins 1&2 are picked up from the radio harness; pins 3&4 go to the driving light relay module.
So do you think if I tie 2 & 3 together, that will force them to always be enabled? I hate having to hit the button every time I plan on using my high beams.
Josh,
I did a test – linking 2&3 does not enable the driving lights. It seems that the on/off is triggered when the 0V goes away, so you need a scheme to link to 0V then remove the link …