im converting my yz400 to run lights and be street legal. i allready installed a wr400 stator and flywheel and im getting ready to wire my lights up. do i need a fuse? i was just gona run the fuse right off the yellow power wire. if so what size fuse? thanks.
does a wr400 take a fuse?
Posted February 24, 2015 - 06:52 PM
Here's a WR400F wiring diagram. It doesn't show a fuse. I had an early WR250F and it had no fuse. I would put one in there just in case something shorts, in which case the stator would probably get hot after a while. 5 amp should do it.
Posted February 25, 2015 - 03:00 PM
ok thanks. im gona put one in just incase. it cant hurt to have one right?
Posted February 25, 2015 - 03:24 PM
If you're running WR headlight/taillight a 5A fuse is a little small - or at least the WR450 headlight is 55/60W, so it should draw around 5A on high. Add in the tail light (another 2A or so with brake light on) and you're better off with a 10A fuse.
Posted February 25, 2015 - 08:29 PM
The Polisport MMX is 35W or a hair under 3A. If you're running the older style WR taillight (on top of the fender, not at the end), the 2A figure I gave is reasonable, so you might get away with 5A but you might not. If you're running one of the newer LEDs 5A would be plenty.