Grid Sizes 2008

[Bob Rice]

It's a while since I last checked, but measurements, LED spec etc, were all identical to DT units.

I guess you pays your money etc. etc.

[Simon Crook]

Hi Bob

Do you/Have you used this with a resistor, if so what size.

thanks

Simon

[Trevor Williams]

Note to all, the MSA have officially postponed the implementation of the rule on FIA homologated rain lights until 2009 at the earliest

[Nathan Pasho]

Bob, are those wired for 12 volts?

OK, found the spec sheet.  9 through 12.5 volts

http://www.us.kingbright.com/images/catalog/SPEC/BL0307-50-44.pdf

[Bob Rice]

Hi Nathan,

Yes they are, I a have one fitted as a hi intensity fog light on my Caterham, and we ran one as a brake light on the 2CV this year (Keith and/or Steve could tell you more).
I haven't used a resistor on the Caterham, and have had no problems, whether or not Keith has used a resistor on the 2CV i'm afraid I don't know.
Hope this helps, Happy New Year to everyone.

[Nathan Pasho]

The prices in UK are absurd.   The same "Ultimate Rain Light" that DT sells is over here for $50 USD.  And the Kingbright light is $10.50 USD.

http://www.hrpworld.com/index.cfm?form_prod_id=133,53,363_1202&action=product

Of course postage may eat the difference.

[Ken Hanna]

Bob,
according to Maplin's FAQ, these lights need a 10 ohm resistor to trim the voltage down to 9.6v.  
Knowing how difficult it can be to get staff these days, I'd guess that they've done their calculations using 12 volts for the car's system.
Since that is actually 14.4 volts when on charge, a slightly higher resistance is probably in order to ensure a reasonable life for the leds.  
A diode to protect against accidental reverse polarity mightn't be a bad idea either...
Ken.

Hi Nathan,

Yes they are, I a have one fitted as a hi intensity fog light on my Caterham, and we ran one as a brake light on the 2CV this year (Keith and/or Steve could tell you more).
I haven't used a resistor on the Caterham, and have had no problems, whether or not Keith has used a resistor on the 2CV i'm afraid I don't know.
Hope this helps, Happy New Year to everyone.