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Headlight Bulb/NO Markings

72r60/7

13278
’57 R60.
Previous owner installed this bulb and appropriate reflector. Bulb has no markings. I’m guessing that it is 6v because it works and during the Daytime, it is bright. Wasn’t impressed during a night test. Although it may be a decades ahead upgrade.

Just wanted to get spare bulb. I call it an H4 base.

Anyone recognize this 6v bulb and know where they buy them ? (If it is 6v)

Charlie

Photos won’t load correctly, but the bulb itself looks like every 60/55 black tipped H4 I’ve ever used.

51FB0E5C-FAEB-4ADD-BC4E-E16ADEFE2187.jpg

DF7FB0C0-5D8F-4745-95D4-1E4DABCB97F0.jpg
 
Google finds: https://www.google.com/search?newwindow=1&rlz=1C1CHBF_enUS843US843&ei=pz68XbfABMWEtQX70KHQAw&q=6+volt+h4+bulb&oq=6+volt+h4+bulb&gs_l=psy-ab.3..0j0i8i30l4.16820.18111..18305...0.1..0.122.676.6j1......0....1..gws-wiz.......0i71j0i7i30j0i8i7i30.M6_UB5_zx0Y&ved=0ahUKEwj3r4OYmsnlAhVFQq0KHXtoCDoQ4dUDCAs&uact=5

Apparently available in 35W/35W and 55W/60W versions. If you have the 35W version, it probably is not very impressive, but I'm not at all sure your switch and wiring can handle the 55W/60W bulb without melting.
 
Google finds: https://www.google.com/search?newwindow=1&rlz=1C1CHBF_enUS843US843&ei=pz68XbfABMWEtQX70KHQAw&q=6+volt+h4+bulb&oq=6+volt+h4+bulb&gs_l=psy-ab.3..0j0i8i30l4.16820.18111..18305...0.1..0.122.676.6j1......0....1..gws-wiz.......0i71j0i7i30j0i8i7i30.M6_UB5_zx0Y&ved=0ahUKEwj3r4OYmsnlAhVFQq0KHXtoCDoQ4dUDCAs&uact=5

Apparently available in 35W/35W and 55W/60W versions. If you have the 35W version, it probably is not very impressive, but I'm not at all sure your switch and wiring can handle the 55W/60W bulb without melting.

I have always used the 35W with the 6 volt systems and the 55W with the 12 volt system. Same bulb base pattern for the /2 headlight plug as for the /5 bulb base plug.

Friedle
 
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