This how I would wire it. The wire that used to go to the points will now be used to power the fuel shutdown solenoid and a new relay for the mags. You will need a 12 volt relay that when it is powered it holds the contacts of the switched circuit open. The switched circuit will ground the Mags when you turn the key off so the wire from the mags will go to the switched side and the other connection will go to ground. You may be able to use the relay from the 2185, I think I have one, if I do I’ll check to see if the contacts are N.O. or N.C..
If you want to use the existing starter solenoid and wiring all you have to do is run the wire on the starter solenoid of the CH to the same terminal that the battery cable connects to on the starter. When you turn the key to start it will send power to the starter and pull in the solenoid at the same time. The other option is to remove the solenoid that is mounted on the tractor and connect the wire that ran from the key to the solenoid on the CH starter.
Alternator is the same.
PTO is the same
I would remove the oil pressure switch and install a gage to keep an eye on oil pressure.
This is a link to the wiring for the 682 + 782
http://www.onlycubcadets.net/forum/f...der=asc&page=4