In Reply to: 8n 12v conversion posted by Luke on October 09, 2018 at 15:26:52:
There are several advantages to going to 12V.
Some have been mentioned; like it spins your engine over faster and you can run modern 12V accessories like lights and sprayer pumps. The new 12v LED lights you can buy are fantastic compared to 6V lights and they are relatively cheap now.
12V is pretty much the standard throughout the world on everything now. Having it on your tractor lets you jump or get jumped by your car, truck, 4 wheeler, lawn tractor, MC, boat, camper or whatever.
A 12v alternator which is internally regulated is far more reliable than than a generator and voltage regulator especially now that all the V-regs are made offshore and too often unreliable.
An alternator requires zero maintenance, is cheaper than a generator rebuild, usually comes with a lifetime warranty, generally has a higher output, will charge at idle and is much simpler because it has fewer wires to connect.
A 12v battery is cheaper than a 6v. They usually come with a better warranty and are available "off the shelf" just about anywhere - as are new 12v battery cables should you need them.
A lot of guys here love to keep their tractors original and therefore like the 6V systems they came with. 6V is entirely adequate.
These old tractors ran fine on 6V for nearly 80 years now.
But 12V has enough advantages that many, if not most, of these old tractors are getting converted to a simpler, more reliable, more modern and ultimately better, charging system.