Louie, I can feel your pain. I don't weld or have any hydraulic experience, so this forum makes my head spin at times.
I doubt there's a kit. A dealer might not do it for liability reasons. It's a pretty easy first electrical project.
Get a switch that looks like this:
Digi-Key DPDT switch
It should have three positions on the handle, six 1/4" quick-disconnect tabs out the back. Neither ON position should me momentary. So the labeling should be ON-OFF-ON. None of the positions should have parens, which specifies a momentary position. So this labeling it wrong: (ON)-OFF-ON.
Get this crimper/stripper wire cutter tool:
tool (any hardware store)
Get 1/4" tab quick-disconnect terminals:
terminals (any hardware store)
Harbor Freight has the tool and terminals together for $10:
305 Piece Solderless Terminal Kit
Use 16 or 18 gauge red and black wire (most hardware stores). Drill a hole to mount the switch; I used a stepper bit like this:
Steel Step Drill Set. I found an existing panel on the tractor otherwise, you might need to mount a bracket for the switch. If you can find a plastic panel, the drilling is super easy.
I put corrugated tubing like this over the wires:
tubing
And electrical tape to hold the tubing together at the ends.
And I added a rubber boot over the switch handle for weather protection:
weather boot
Good internet electronics dealers include: Digi-Key, Mouser, Jameco, Parts Express, and MCM.
Message me if you need more pointers. Good luck!