I haven't run into this issue as of today but obviously will have to eventually replace bulbs in my euro headlights. My '85 300SD has the H4 euro headlights as an aftermarket upgrade. If anyone else has these types of lamps and could tell me what type of bulbs that I will eventually need and where to find them, much appreciated.

Thanks.

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Brian
'94 E420 - 99K
'12 C300 4 Matic

Previously owned:
'06 CLK 500K Cabriolet
'85 300SD (Old Smokey)
2002 Boxster
2002 C320 (The five-pointed star Mercedes)
1993 300E 3.2 (Dealership's cash cow)
1979 300SD (Chrome beauty)
1983 300D (Old faithful)
1983 240D (Right lane cruiser)
1977 240D (Miracle of bondo)

I bought two "off-road only" H4 bulbs at a local 4x4 truck place that are 80/100watt bulbs. I put in four new white fuses in the 560SEC and made sure all connections were fine since I'd be drawing much more current. Work great, been in there about five years. LOTS of light now. The 4x4 truck guys probably have the 55/65 watt bulbs but I never checked.

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There is a very fine line between "hobby" and "mental illness."
FrankenBenz: '87 560SEC with an '02 cammed LS6 and custom 4L60E.
Bling: '87 560SEC, ported/polished, lowered
Lisa: '87 560SEL, lowered

I wouldn't use overwatt bulbs with the stock wiring. You can pick up H4/9003 lamps from any good parts place.

-Jason

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

The bulbs are called H4 and you can get them at PepBoys, etc.

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Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles