slightly off-topic electrical Q

[Calvin Krug]

I say this is off-topic because it's not on an Audi, but since A lot 
of folks here have worked with euro headlights, I thought I could 
find some help.  Anyway.....   A friend of mine is installing a set 
of euro-spec lights in his car and has hit a snag.  The side 
marker/turn signals in the new lights are a single, one filament 
bulb.  It's designed to operate as a park lamp on 6 volts, and a turn 
signal at 12.  We need to figure out a way to duplicate this function 
using the car's 12 Volt only system.  What do we need to make it 
work, voltage regulators, resistors, a 6 ounce bar of unobtainium?  I 
could probably figure something out if I had time, but we're on a bit 
of a schedule.

Looking for enlightenment

Calvin K.