Has anyone replaced the turn signal bulbs on their Stelvio with amber LED replacement units? These are a type 7507 bulb with a BAU15s base (locator pins offset by 150 degrees rather than the 180 of an 1156 bulb). Another complication is that the factory bulbs are 12v 10w, where many other 7507 units are 21 watt.
Some 10w replacements are up on Amazon and eBay, but the sellers are almost universally ambiguous about things like the need for load resistors / ballasts, etc.
Suggestions welcome...