Got 12V kit, lost docs, anyone recognize this?

[1 Acre Warrior]

I see you are located in central Minnesota. A 12 volt coil should still work well for you when temperatures are above zero F and the starting battery is in good condition.

The 6 volt coil with a bypass resistor setup is for an extra hot spark during starting in below zero F weather when the battery voltages are lowest, engine oils are thickest and gas engines are just harder to get started. As engine compression ratios increased, most 12 volt tractors, cars and trucks, including most Fords, used a 6 volt coil with bypass resistor from when 12 volt systems became standard in the late 1950s on into the 1980s. You should be able to find wiring diagrams and parts lists from late 1950s and 1960s Ford gas tractors cars or trucks that used a bypass resistor ( Ford 600, 800, 2000, 3000, 4000, etc. ).

I did not see a new coil, a new solenoid or a resistor in your conversion kit. Cost might be about a wash between buying a new 12 volt coil or buying a new solenoid and bypass resistor.

Give it a try as-is for one winter to see if it works for you. An N series Ford tractor should be low compression and be easy to start in 30 below temperatures. As the 12 volt battery gets weaker a 6 volt coil with a bypass resistor might let your battery continue to start the tractor for an extra year or two before the battery needs to be replaced.

No new coil, but got a 3.3 Ohm resistor. I'm not going to be using this in cold weather (I'm in northern Nevada, and don't do yard work in freezing weather).