Dave:
The small extra connector is for a 7 watt 'City bulb' - the European equivalent of daytime running lights. The best H4 bulbs in standard wattage (don't go over wattage bulbs without relays and heavier wire!) available in the US are the Hella +30 or Phillips Premium (same as plus 30) which increase light output without increasing wattage through a redesigned filament. Also available from Europe (haven't tried them) are either Philips Vision Plus or Osram Silver Star H4 bulbs with a claimed 50% greater output from the standard wattage. I haven't tried these yet (I am running +30s which do make a difference), but plan on ordering them from:
http://www.fosmo.com/

__________________
John

2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)

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