Charlatan

I have a 6v 5w bulb (festoon style) that I would like to replace with some LEDs. I know that I will have use some sort of resistor but I don't know which one.

I would like to be able to draw the same about of power as the original bulb (if I don't the other bulbs in my system will likely blow). The power source is a stator plate powered by a flywheel on my Vespa.

I realize I will need to use more than one LED but do I need a resistor for each LED and if so does anyone have any suggestions on how I might rig this up?

Thanks!!

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tehhappyboy

I'd like to know what festoon style is. There are companies (LEDTronics, disclaimer: financial interest) that make just about any replacement bulb imaginable out of LEDs.

If you really feel like building it yourself, it's not as safe or rated but you can hook LEDs in parallel or serial putting one or more resistors in line (depending on the needed resistance, you may infact need none*) and using ohm's law ( Volts(E)=Amps(I)xResistance(R) ), the resistance addition formulas (series resistors add, parallel resistors add in inverse (R1+R2)/(R1xR2) and the power law, Watts=Volts x Amps to find the right amount for you.

You will need to do research on the different kinds of LEDs as well. Luxeons are powerful at 1W a piece, but there is a new style that is of incandescent color, looks like a mag light. But Still, my advice is to ask one of those companies about something that will work, they probably have something.

*Resistors in LED circuits are used in battery DC circuits to limit the current draw. Some LEDs come with resistors built in! For a 1W luxeon you will have to see what the power supply gives you to determine what resistors are needed.

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flat5

Can't really find what you want. The Luxeons do look promising.

http://www.quality-items-flashlights...products_id/97

http://www.quality-items-flashlights...ducts_id/11353

Charlatan

Thanks guys.....

__________________
"My hands are on fire. Hands are on fire. Ain't got no more time for all you charlatans and liars."
- Old Man Luedecke

iamnormal

Does your Vespa have a voltage regulator?

Charlatan

No. It doesn't.

I haven't been able to find one for a 6v system.

I have done a bit more research and I am missing one bulb from my system (the speedometre bulb - my speedo doesn't have one where there should be). Apparently the 6v - .6w bulb is important to the balance in the system.

Anyone have any suggestion how I might add something like this to the system?

Here is a .pdf of the wiring system for my vespa. LINK

__________________
"My hands are on fire. Hands are on fire. Ain't got no more time for all you charlatans and liars."
- Old Man Luedecke