1966 140 battery and switch wiring

Farmall Super A, AV, 100, 130, & 140 1939 - 1973
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crowbar032
Posts: 3
Joined: Tue Mar 09, 2021 9:10 am
Zip Code: 47032

1966 140 battery and switch wiring

Postby crowbar032 » Fri Mar 12, 2021 12:43 pm

New poster here, but I belong to a few other tractor forums. Seems like this is the place for 140 information. I have a 140 and the serial number indicates its a 1966 model. I bought it not running, but it is not locked up.
The wiring is not what it should be and I'd like to get it back so I can put the battery where it belongs and not under the seat. I'm having trouble finding a diagram and whether its a positive or negative ground. I hooked the positive to the starter and ground to the frame and the starter engages, but the key and starter button won't work so something is off. Any direction and pics would be helpful. :lost:


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Don McCombs
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Tractors Owned: "1950 Something" Farmall Cub
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1948 Farmall Super A
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Location: MD, Deep Creek Lake

Re: 1966 140 battery and switch wiring

Postby Don McCombs » Fri Mar 12, 2021 12:58 pm

Negative ground.
Don McCombs
MD, Deep Creek Lake

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inairam
5+ Years
5+ Years
Posts: 2249
Joined: Wed Jul 08, 2015 10:24 am
Zip Code: 19342
Tractors Owned: 1948 6v - Dozer
1949 with kub klipper belly mower. mag 6v - Mom
1950 with plow, 54 blade, mott mag 6v - Roxanne
1953 54 blade, c22, wood 42 6v
1957 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v c-2
1975 with woods 42-6 12 v - Horse
1979 long strip 12 v stuck engine
130 with international 1000 loader 6 v
1969 140 with bush hog tow behind mower 12 v
Terramite T-6 4WD Backhoe Perkins diesel
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: 1966 140 battery and switch wiring

Postby inairam » Fri Mar 12, 2021 2:39 pm

My 1969 is 12 v negative ground with the pushbutton start like this.

there should be a cable on both sides of the button switch. from the battery + to the switch. The other post is from the switch to the starter. The wires do not look that bad in the pictures. The PO must of had a reason to do what he did. You may want to check and or replace the switch before moving the battery back.

Even though it is 12 volts I still use AWG2 cable for the battery, starter ground cables. Mostly because I have it around for the 6 voters and electric golf carts.
When you only have 9 horsepower you need to know the names of all of the ponies!

crowbar032
Posts: 3
Joined: Tue Mar 09, 2021 9:10 am
Zip Code: 47032

Re: 1966 140 battery and switch wiring

Postby crowbar032 » Fri Mar 12, 2021 2:47 pm

inairam wrote:The PO must of had a reason to do what he did. You may want to check and or replace the switch before moving the battery back.

The battery box was rusted out/gone. I can only assume it was easier(cheaper) to move the ground cable than to replace the box.

crowbar032
Posts: 3
Joined: Tue Mar 09, 2021 9:10 am
Zip Code: 47032

Re: 1966 140 battery and switch wiring

Postby crowbar032 » Sun Mar 21, 2021 6:08 am

Just an update. The push button was bad. I replaced that and replaced the battery box and put the ground where it should go. It turns over fine now, but the key switch doesn't seem to turn off as the coil gets hot when in the off position. I got it to run spraying starter fluid into the carb, but it won't run otherwise. Time for a carb rebuild kit and cleaning.

inairam
5+ Years
5+ Years
Posts: 2249
Joined: Wed Jul 08, 2015 10:24 am
Zip Code: 19342
Tractors Owned: 1948 6v - Dozer
1949 with kub klipper belly mower. mag 6v - Mom
1950 with plow, 54 blade, mott mag 6v - Roxanne
1953 54 blade, c22, wood 42 6v
1957 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v c-2
1975 with woods 42-6 12 v - Horse
1979 long strip 12 v stuck engine
130 with international 1000 loader 6 v
1969 140 with bush hog tow behind mower 12 v
Terramite T-6 4WD Backhoe Perkins diesel
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: 1966 140 battery and switch wiring

Postby inairam » Wed Mar 24, 2021 8:56 am

Had the same problem with the key switch
When you only have 9 horsepower you need to know the names of all of the ponies!


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