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that is precisely why we use resistors.
i wouldnt be shocked if you popped it.

i would recommend looking at the above LED Guide to see what you need :)

it coverts a certain amount of energy in to heat and thus reduces the energy in the circuit.

Thanks for the response,
I've already read that tutorial, i just wondered why people had done it differently i personally would have thought it would have gone at the front before the diodes.

I...

nice guide thanks for that going to go play later as long as i find the LED's i want :)

just a question though, why put the resistor at the negative end? a few of the wiring diagrams put it at the...