Does the reverse overide button draw current when tie straped in and the key off? Its the only thing i did different and the battery was down. Or it could be all the plowing and winching and not driving it enough to charge back up. 07 800 sp

 

i'm betting on the second one

 

I have a 2002 400 Sportsman and have removed the reverse interrupter along with rewiring with an on/off switch for reverse. I have no battery problems and i use a electric lift,flasher & heated grips. I did change my battery to an AGM but its the same amps.
I would look into the wiring diagram and fix it so you have an on/off switch instead of the way you have it.

 

he cant just do away w/ the button as it scrolls thru the menu's in the speedo. your older 400 doesnt have that. im betting your winch killed the battery. put a switch in to bypass the button while in reverse like i did so you can switch back in forth and still be able to use the override scroll feature.

 

Thats basically what i am suggesting. Wire tying the switch on isn't good especially if it does more functions. Do the newer models use the reverse interrupter yet? I got a warning from the police because of the noise. Thats what got me digging into the change and its great now.