I’ve been investigating replacing the Rear Fog and the Reverse light in my NC with LEDs
I had success with the T20 for the fog with a supposedly non-CANBUS bulb, provided I fitted the RED LED the correct way round (ie in low wattage mode and not in CANBUS cooking hot mode.)
But no real luck yet with the T15 because I cannot find any non-CANBUS T15 bulbs so they will not cook themselves to death if left on for more than a few minutes, and the tests I did on the workbench with some samples I bought almost convinced me not to bother even fitting them.
I tested this one which got to 120C in under three minutes, and this one which took at least five minutes to 110C which I’m trying in the car because it’s a lot brighter than the old bulb.