My 1 wire mini alternator mod for kubota. $56

Lblevins

Member

Equipment
Kubota L2200, John Deere 1050, Kubota L3301 with woods bh80x
Sep 1, 2017
48
1
6
Ada, ok, USA
Purchased an ebay 35amp mini 1 wire alternator, drill bottom hole out with 1/2" bit and top with a smaller bit (dont remember exact size) just enough to cut threads out so top bolt will slide on. remove old alternator. Add a nut about 1/4" thick to bottom bolt before sliding on. Slip on alternator on bottom then tap top bracket down a tad till hole lines up then stick belt on and then reinstall shield/nuts onto bolts. run power to starter power and lead off headlight wiring to top cross spade connector and done. $56 and works great. I rewired my tractor for a newer style kubota switch with glow plug hold on one side and am very happy overall with redoing it all. Starts a millions times better!!!
 

Attachments

David Page

Active member

Equipment
1974 L260, 6" bush hog, subsoiler, spring tooth harrow, boom pole, 2 bottom plow
Jun 25, 2013
381
66
28
Dexter, ME
Nice job, does this give you more amps?
 

Dave_eng

Well-known member
Lifetime Member

Equipment
M7040, Nuffield 465
Oct 6, 2012
5,124
931
113
Williamstown Ontario Canada
Looks Nice ! :)

Curious, what tractor model and exact wiring to eliminate the external regulator? :confused:
Denso makes a copy of the old GM one wire setup with internal regulator but shrunk it in size.

Some current GM vehicles use Denso alternators rather than Delco.

Here is an ebay link

https://www.ebay.com/itm/CHEVY-GM-M...ash=item4d25f0564a:g:28cAAOSwB09YPx7H&vxp=mtr

All the existing regulator wiring would just be taped off. The one wire from the new alternator to the battery terminal on the starter solenoid.

Some consideration for a non charging warning is likely necessary.
A voltmeter or a solid state voltage monitor as on some riding mowers.

Dave
 

Dave_eng

Well-known member
Lifetime Member

Equipment
M7040, Nuffield 465
Oct 6, 2012
5,124
931
113
Williamstown Ontario Canada
This is the smallest and cheapest Denso one wire I have seen. 35 amps, $53.

https://www.ebay.com/itm/ALTERNATOR...-1-WIRE-8162/162822501607?hash=item25e8fa34e7

This simple voltage display will be the finishing touch.
I suggest this one because it ships from USA and is still under $10.

https://www.ebay.com/itm/Digital-Vo...ZMX8iNG_0ST_SvQ:sc:USPSFirstClass!01370!US!-1

Others from China are 1/2 that price but take a while to arrive.

This indicator is completely independent of the alternator so no complicated wiring. Also, you get to see the battery voltage while the engine cranks and get warned of pending problems with battery or starter.

My friends Buick Lucerne uses a Denso alternator much to my surprise. I expected any GM product to use a Delco but no longer.

Dave