Wot they said, led's dont draw anything like the same currant as conventional bulbs and a special solid state relay is needed.
I went down the in line resistor route as that's what I got supplied (bought indicators from R&G with tail tidy) but either option will do the trick
heres an ebay link, if been thinking of doing mines for a while. LED flasher relay Honda CBR 600/1000 RR Fireblade | eBay
Oh yeah forgot to link to this post. http://1000rr.co.uk/mods-upgrades-accessories-products/6009-2.htm
got the led relay mate, fitted it, indicators working great, cheers, wish had got one first, and not bothered with them poxy resistors,