2004 MC40

"grey wire with the red stripe. This is the instrument backlight power lead and will illuminate the control switch for the driving lights when you turn the headlights on".

ok so when i turn the head lights on this does happen, however when i turn the key on, the switch will no longer be illuminated? and does not seem to function at all?

I check all the grounds and leads they all look fine. Could this be a problem with the relay?

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This post was auto-generated based upon a question asked on our tech article page here: MINI Cooper Driving Light Installation (R50/R52/R53 2001-2006) | Pelican Parts DIY Maintenance Article

Sounds like a voltage drop. if the other lights are staying on, check and confirm voltage as the switch is going away.

- Nick