Hooking up a electric control box to tractor for sprayer

Willy P

Member
I installed a foam marker on my spray rig and it has a electric plug where you conect the wires to the tractor and plug the foam marker in but I want to use it on other tractors, I thought about putting alligator clips on it and connecting it straight to battery. The book says to connect to a hot wire on the key switch but if I go straight to battery will that be alright,although one tractor has two 12 volt batteries? Should I put some kind of breaker in line? Thanks
 

I'd avoid hooking it up direct. At least cut the hot wire and put a fuse holder in it. I'd go a little tuffer than aligator clips also, but thats just me.
Maybe a cigarette lighter on the tractors and a male plug for the sprayer??

Dave
 
Is the system 24V with the 12's in series? Or a 12V electrical system with the 12's in parallel?
You won't like the results if the tractor is 24V.
Is the tractor + or - chassis?
 
The foam marker on my sprayer is hooked up with a 2 wire trailer light connector, that would be a simple solution for "plug and play" on different power units. I second the fuse idea and will go one better, my foam marker uses a breaker type fuse so I don't have to replace fuses if there is a problem.
 
If your tractor with two batteries is a '60s vintage John Deere with a 24 volt system, running a load off one battery will eventually give you a dead battery. In this case, the 'gator clips are ideal, because you can alternate batteries every other time you use it to keep their charges in balance.
 
This tractor is a JD 2640 with two 12 volt bateries in line for a 12 volt system with negative ground.
 
As far as connectors, go to the heavy duty 7 prong like used on newer tractors or tractor-trailer trucks. Those foam markers draw lot more juice than you might think and will let the smoke out of a light duty connector. Don't ask how I know this!
 

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