02 wr 426 and 05 kaw 450 the kaw was new and mine i have no idea i just bought it used
where might this grey wire be also i found this post looking around this stuff sound good
Remove the coil, that will make it somewhat easier to get too.
My suggestion is to get familiar with the FCR carb! Don't be affraid to loosen the carb from the boots and jimmy it out of there a little (remove the coil, but the carb will still tilt out from the LEFT side of the bike.) That will make it a WHOLE lot easier, plus you can see how far the slide opens up and see how much you need to trim from the stop to get FULL throttle operation. And, you can see how much fuel that thing squirts, via the accelerator pump, when you twist the throttle. This will answer a bunch of questions you'll have next regarding the "BK" mod that you'll enevitably read about and do.
There is a butt-load of power available in a few cheap little mods: Gray wire, throttle stop, change needles (I run ELN), BK mod, YZ timing. There isn't $20 in ALL of these and it will garner you a, conservative, 40% increase in power over the stock, plugged up WR!
All that said, the BEST thing you can ever do to a WR is get a YZ seat/tank combo. If you wish to turn sharp, at all, ever, you need to get more forward on the bike. Keep an eye on ebay and www.thumpertalk.com for used tanks. I have a '98 tank on my '01 WR that I got for $50 and an SDG seat new for $80.
what is a bk mod ?