6v to 12v conversion

 I want to convert my B to 12 volt from 6 volt. What all would I have to replace in order to do this.

Steve's kits are complete and he provides easy to follow instructions-and his price is comparable to a DIY installation (his photo does not show the mounting bracket for the alternator, however he used to have them available. Contact him as he is very knowledgeable and a real good source of info.However if you want to DIY, you will need a 12V battery, 12V (internally regulated) alternator or generator (if using a generator, you will need a 12V regulator), a 12V internally resisted coil (or if you want to keep your 6V coil; a ballast resister block wired into the lead from the switch to the coil), new ignition and light switches, and a mounting bracket if going with the alternator. Recommend you change it to negative ground; you will need to reverse the leads on the ammeter (or replace it with a voltmeter) and wire the coil such that the - terminal goes into the distributor (assuming you have a distributor). You should also change the light bulbs to 12V ones. You should also consider new battery wires. I am now also installing the Petroex Electronic ignition module in my 12V upgrades; Steve can provide the one you need (engines seem to start and run smoother-and you no longer have to worry aboult points and condensers failing). Link to Duey's site where you can find the wiring diagams below

Another thing how much will it cost because I don't have lights and don't really need them and I just want my B to start better.

You are wasting your time to try to convert a 6 volt genny to 12 volts. IF you proceed with the conversion then use an alt. reguardless of using lights or other accesories. It will start better if everything mentioned above is done correctly. You can swap out the cables and such and get the most out of the 6 volt system but it still is nothing close to what you'll get if you swap it to 12volts. Plus the change takes care of the charging problems. No matter what voltage you use it will need to charge for it to work right.

I converted my CA and Oliver 60 both to 12V. The CA has a D17 generator and regulator on it. The Oliver has a 770 generator and regulator. Oliver and A-C both used the light switch to control the charge rate, high and low. I just added regulators and used the original wires. Eventually I did run new wire, but the change was only adding the regulator in line with the armature wire near the ammeter on both tractors. The field wire was unhooked from the light switch and connected to the regulator.

I have converted 6v generators to 12v. the armiture and the field coils will have to be changed and you will need a 12v regulator.

steigerbro24 wrote: Brian are saying that there was a switch that regulated the charging rate?

Yes, the light switch also controls the charge rate. With the switch all the way in, it's lights off low charge. One notch out, lights on high charge, all the way out, lights off high charge. This type of charging system only has a cutout relay usually on the generator. I did what it sounds like you want to do. I upgraded the CA because at the time I didn't know that you need at least 02 gauge cable for a 6v system to crank the engine. 00 gauge is better yet. More headlights and warning lights were what I wanted. I used the original brackets on both tractors.

Everybody is going to a lot of trouble when all you have to do is put a 12 volt battery in the case. Hook it up postive ground, and since you do not have lights you do not need to change blubs to 12 volts. If have a mag your ready to go. If coil put a resistor in the line to the  coil. I have done many a tractor like this for many years and they are still starting like right now

whats the cost of the wd 12 volt kit pictured

For pricing of his kits, it is best to contact Steve directly at B&B Custom Circuits. His site's contact page has phone and email info to reach him.

Jerry (Ohio) wrote: Everybody is going to a lot of trouble when all you have to do is put a 12 volt battery in the case. Hook it up postive ground, and since you do not have lights you do not need to change blubs to 12 volts. If have a mag your ready to go. If coil put a resistor in the line to the  coil. I have done many a tractor like this for many years and they are still starting like right now

. Agreed

A "GOOD" 6 v generator will put out about 14 volts when not connected to a 6 v battery. The battery basically acts as a regulator.......... SO... you cant put a 12 volt battery in the tractor with a 6 v generator and it SHOULD charge the battery. I have a B that is setup that way ...( it has a 12v regulator installed)...... You can also install a 12 v battery and not connect the generator wires.. The battery will run the tractor for several hours before needing a recharge.. Just put it on the charger when you park it.

Edited by steve(ill) - 26 Dec 2019 at 7:09pm