Re: [doc] H4 bulbs on the D...

[John Tien <johntien99@xxxxxxxxxxx>]

Thanks Martin and Nick for the reply!

I will swap the 55/60W back in for the time being just
to be on the safe side.... damn, I do like that white
HID look! Anyway...

I think I better save up and invest on real HID... Had
to sort out the transformers though!

So, when I have bought myself a real pair of HID
headlights... will I need to do the same job of laying
heavier duty wires?? And will I need to get a
different headlamp shell?? Or will the existing ones
be fine for the job? (I am no expert on HIDs... but
are HID lamps hotter or colder than the H4 bulbs I
have got at the moment?)

Many Thanks for you guys' help!!!

Regards,
John Tien
DOC 8
RHD 3046


--- Nick Tomlinson
<nickandkathryntomlinson@xxxxxxxxxxx> wrote:
> 
> I presume you mean "to double the bright intensity,
> the power of the pulb has to be quadrupled (using
> the current lamp technology)"
>  
> This can only regarded as a rule of thumb as the
> light intensity cannot be determined by the power
> consumption. Power is defined as the rate of energy
> consumption by an electrical device when it is in
> operation.
>  
> The SI Unit of Power is a Watt.
> The SI Intensity of Light is a 'Candela' (and is v
> complicated and historical)
>  
> Don't mean to be picky.
>  
> In a nutshell JohnT Tien, due to the power
> consumption of the bulbs, it is recommended that you
> don't use them UNLESS you add a relay circuit and
> use heavier duty cable sufficient for the current of
> the new bulbs but then again, do you really want
> melted headlamps & eyebrow bumpers. Why not use the
> different gas ones like Xenon/ Neon etc..
>  
> NickT 
> 
> Martin Gutkowski <martin@xxxxxxxxxxxxxx> wrote:
> 
> John Tien wrote:
> 
> > I have got displays "12V
> > 100/90W".... will that cause a problem?? Will the
> bulb
> > be too hot for the shell?? 
> 
> YES!!!!
> 
> > And can the existing
> > DeLorean wire handle these 100/90W bulbs??
> 
> NO 50% more power = 50% more current, melted/blown
> fuses will result. In 
> fact all the new headlights I've seen all say not to
> exceed 55/60
> 
> It's all square law anyway. To double the power of a
> bulb, you have to 
> quadruple the wattage. ie 100W ain's twice as bright
> as 50W
> 
> Martin
> 
> 
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