I have a cigarette lighter type plug in for the sprayer I use. I think I had to splice that type of plug end onto the sprayer wiring. I’d rather it was hooked up to battery of the tractor but that’s way up front. With the tractor running I don’t think it would ever run the battery down. The plug end that is on the sprayer end that plugs into the tractor has a small glass style automotive fuse that if I use the spot sprayer wand almost continuously for a few minutes it will pop that fuse. There is also an on/off switch in the sprayer wiring that I can switch when using the broadcast spray.