02GF74
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| posted on 8/1/08 at 10:00 AM |
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stoooopid headlamp bulb question
headlamps using bulbs that have both low and main beam elements e.g. H4 bulbs as fittedto 7 inch bowls in 98.7 % of 7 and 100% or cobras - when dipped
beam is swtiched on and the main beam stalk is pulled, are both elements on?
likewise if headlamps are off and main beam stalk is oulled e.g. to flash - does the dipped beam come on?
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Rhys aka Celtic Tools
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| posted on 8/1/08 at 10:03 AM |
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from my experience the elements operate individually
and when you flash your head lamps just the high beam comes on
For all your tool needs contact Rhys @ Celtic Tools 02920 619137
www.stores.ebay.co.uk/celtic-tools
Big discount for all my fellow locost builders
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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Howlor
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| posted on 8/1/08 at 10:04 AM |
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I think normally the dipped beam goes off.
Steve
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dan__wright
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| posted on 8/1/08 at 10:05 AM |
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depends how you wire it but normally its
if you flash full co mes on regardless if dipped are on.
dipped beam = dipped, full = full only, flash with light off = full only, dipped beam on then flash = both filaments on.
FREE THE ROADSTER ONE…!!
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dan__wright
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| posted on 8/1/08 at 10:06 AM |
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yeah dipped goes off when on full but if its to flash the lights will stay as they are + full
FREE THE ROADSTER ONE…!!
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BenB
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| posted on 8/1/08 at 10:24 AM |
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It depends how it's wired 
I've got it on mine so both can be on at the same time. I think normally the wiring is set-up so the dipped filament goes off when you put on
mainbeam. My setup has a few pros/cons
Disadvantages- higher power consumption, possibility of bulb overheating
Advantage- brighter, dipped beam isn't being switched on / off IE lower risk of blowing
Advantage-
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graememk
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| posted on 8/1/08 at 10:40 AM |
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Its not offen i use main beam in my indy anyway, not very offen out when its that dark.
but mine are wired so that only one bulb is on at a time but when i flash the lights both light up.
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02GF74
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| posted on 8/1/08 at 11:14 AM |
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hmmmmmm ... I don't like the idea of having both filaments on atthe same time so I guess I haven't fixed by lamp problem after all then -
that wpold explain why there is a change over relay  ... and why it worked before .... so what the hell did I change ????
[Edited on 8/1/08 by 02GF74]
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RazMan
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| posted on 8/1/08 at 11:15 AM |
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Best to use the filaments separately as the bulb is likely to overheat. Also bear in mind you will drawing over 16 Amps with both beams on (standard
bulbs) so watch out for your loom overheating too.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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