I got a 2004 400ex 4 wheeler and there is no power to it no neutral light. The lights don't work it wont even try to turn over at all got a brand new battery on it. It was working great tell one day it just shut off after riding and never been turned on again its been about 7 months now and we can't find any thing please help.

 

did you check the fuse? what is the battery voltage?

 

bad ground wire maybe?

 

Check under the front plastic there is a harness connector that went bad on my 01 400 the harness has a black a red and a black/white the red is the positive from the battery all the way to the key switch and the pin in the connector went bad on mine all of a sudden no warning I had no lights neutral light starter at all I followed it back found the bad spot jumped it with a wire and she lit and fired right up soldered in a new wire and has been fine rest of the day hope that helps