Starter push button

[Dawgbone]

my old 9n has a one wire push button to start the thing. I can't find a one wire but I can get a two fire. Does it matter which terminal I put the hot wire on? Do I have to ground the other?
Thanks guys for your help.

 

[Jerry9N]

There should be a two terminal switch below the battery. One wire from the battery goes to one terminal, and the other terminal goes to the starter. I am assuming you are wired as it left the factor. The button up on the transmission pushes a rod to press on this switch if, and only if, the tranny is in neutral.

 

[Dawgbone]

IInby

There should be a two terminal switch below the battery. One wire from the battery goes to one terminal, and the other terminal goes to the starter. I am assuming you are wired as it left the factor. The button up on the transmission pushes a rod to press on this switch if, and only if, the tranny is in neutral.

12 volt system and push button is on the dash.

 

[Tim PloughNman Daley]

my old 9n has a one wire push button to start the thing. I can't find a one wire but I can get a two fire. Does it matter which terminal I put the hot wire on? Do I have to ground the other?
Thanks guys for your help.

Does it start now? I take it ain't an OEM Switch. Advise to get one - Denny Carpenter Repops. Two different switches were used. The first 9N's to s/n 12500 used the dash mounted Start Pushbutton Switch. SEE PIX. After 1940 switch was moved to lower top cover by shifter lever. Part Number: 9N-11450-A (prior to s/n 12500)); 9N-11450-B (after s/n 12500) and are not interchangeable. Both switches have two wire terminals; one to the lone wire connection on the Starter Motor, and the other terminal is the battery NEG cable connection.

Your Mileage May Vary,
Tim Daley (MI)

 

[JMOR]

my old 9n has a one wire push button to start the thing. I can't find a one wire but I can get a two fire. Does it matter which terminal I put the hot wire on? Do I have to ground the other?
Thanks guys for your help.

Might & might not, as there are a dozen different solenoids out there, including those that don't put a 'hot wire" on any small terminal....they need ground applied to activate.

 

[Tim PloughNman Daley]

12 volt system and push button is on the dash.

Does tractor run now??? With the dash mounted Starter Button also was an IGNITON "ON" Dash Lamp. Do you have that as well? 6V or 12V, it does not matter; switch doesn't care, system doesn't care. I'd opt for the exact-as-original dash mounted switch, 9N-14450-A Carpenter makes then if'N it were me... that way it fits and functions correctly and you won't need to muck around with it. May as well go thru entire wiring while you're at it. Starter Motor 1-Wire/NO RELAY; 12V ALT and NO CUTOUT? BELT TENSIONER attached? Might need a new wiring harness.

Tim Daley (MI)

 

[mhb@ufe]

my old 9n has a one wire push button to start the thing. I can't find a one wire but I can get a two fire. Does it matter which terminal I put the hot wire on? Do I have to ground the other?
Thanks guys for your help.

If the dash mounted push button only has one wire connected to it I would think it is a grounding wire to activate the solenoid.

Mark

 

[Tim PloughNman Daley]

If the dash mounted push button only has one wire connected to it I would think it is a grounding wire to activate the solenoid.

Mark

Does tractor start now with what you have? If you have two terminals on the switch now, try connecting the wiring as stated and shown - one to battery and one to starter motor. No need to buy a new one if you can make this one work. You will want to connect the POS battery cable though as you are using 12V. Are you also using an ALTERNATOR?

Tim Daley (MI)

 

[Dawgbone]

Yes I can start it if I hold the terminal and wire together. It only has one terminal with that wire going to the solenoid. ( I think that's what it's called.) I'm not a mechanic. A lot of things you guys are talking about I'm having a hard time understanding.. LOL
12 volt system with alternator.

 

[mhb@ufe]

Yes I can start it if I hold the terminal and wire together. It only has one terminal with that wire going to the solenoid. ( I think that's what it's called.) I'm not a mechanic. A lot of things you guys are talking about I'm having a hard time understanding.. LOL
12 volt system with alternator.

What happens if you touch the wire to ground instead of to the terminal?

Mark

 

[Dawgbone]

I don't know, I haven't taken it off the terminal. The terminal is almost broke that's why I'm inquiring about a new start button.

 

[mhb@ufe]

I don't know, I haven't taken it off the terminal. The terminal is almost broke that's why I'm inquiring about a new start button.

We can't see what you have but if there is only one wire going to the push button it must be a grounding switch. That needs to be verifiedand if that is the case a two terminal would require the second wire to go to ground not power.

Mark

 

[Dawgbone]

That's what I was thinking but could the fact its screwed to the metal dash be considered a ground? Its an old metal push button.

 

[mhb@ufe]

That's what I was thinking but could the fact its screwed to the metal dash be considered a ground? Its an old metal push button.

Yes, the metal dash could be providing the ground.

Mark

 

[used red MN]

It seems like Mark has your most probable answer. A horn button may be a direct replacement. He asked you about what happens when you ground the wire off the switch because that would probably make the engine crank. If so that would confirm the configuration of your solenoid.
Some guys get thrown in a tither when your machine isn’t bone stock. First they have to push their “nothing can be better than stock” sermon on you. Then finally when they figure out you can’t be converted they give in and answer your question. They usually know it they just make it an uphill battle to get there.

 

[wore out]

my old 9n has a one wire push button to start the thing. I can't find a one wire but I can get a two fire. Does it matter which terminal I put the hot wire on? Do I have to ground the other?
Thanks guys for your help.

Check out the info below. One switch snaps into a hole in the "dash" and has only one terminal as your bolt-on unit has, the other bolt-on unit has two terminals, one of which would need to be connected to a grounded wire. The numbers shown are Standard Ignition part numbers which many local auto parts stores can supply/order, if NOT GOOGLE will show you many on-line sources.

 

[Dawgbone]

The top picture is close to what I have.

 

[Tim PloughNman Daley]

What happens if you touch the wire to ground instead of to the terminal?

Mark

YOU don't want to connect it to GRN. Wire it correctly as stated. FACT: 99.98% of all non-starting issues are due to incorrect wiring regardless if 6V or 12V, and many of those are from 12V conversions gone wrong. Work with facts, not opinions or guesses. Too many guys 'think' they know how to wire electrical systems but don't.

Tim Daley (MI

 

[Tim PloughNman Daley]

If the dash mounted push button only has one wire connected to it I would think it is a grounding wire to activate the solenoid.

Mark

There is no SOLENOID (RELAY) on the 9N/2N STARTER MOTOR. 9N Starter had 1-WIRE and NO RELAY. Many see the ROUNDCAN CUTOUT CIRCUIT and call it the SOLENOID. It is a SOLENOID technically or RELAY but not referred to as the SOLENOID for clarification. Get the MANUALS and Wiring Pictograms and diagrams. Don't waste time with aftermarket junk sh!t

Tim Daley (MI)

 

[Tim PloughNman Daley]

my old 9n has a one wire push button to start the thing. I can't find a one wire but I can get a two fire. Does it matter which terminal I put the hot wire on? Do I have to ground the other?
Thanks guys for your help.

DAWG-OK - I'm going to start over and go slow. First, having the correct wiring config to begin with is very important. Know what all the components are and how each is wired. ALL N's from '39 thru '49 used the front mount distributor. In that coil circuit is the BALLAST RESISTOR. It is a required staple in both the 6V/POS GRN and 12V/NEG GRN setups. There is no SOLENOID (RELAY) on the 9N/2N STARTER MOTOR. 9N/2N Starter had 1-WIRE and NO RELAY. Many see the ROUNDCAN CUTOUT CIRCUIT and call it SOLENOID. It is technically a SOLENOID or RELAY but not referred to as the SOLENOID for clarification. When doing a 12V conversion, the ROUNDCAN CUTOUT is removed altogether from the circuit. SEE PIX. If you use the OEM 6V Coil in a 12V conversion, you need to wire an inline 1.6 Ω (OHM) ceramic resistor, p/n 8N-10306, to the coil circuit. Eliminate this extra resistor simply by swapping out your 6V Coil for a verified 12V Coil.

NOW:
You need the two-terminal switch. ONE terminal is connected to the POSITIVE Battery Cable for a 12V system, and the other switch terminal is connected to the STARTER MOTOR as shown. Wire polarity doesn't matter. DO NOT CONNECT any wires to GROUND. In ADDITION, you also need to run a wire from the battery POS cable to the bottom post on the BALLAST RESISTOR as shown using the WIRING PICTOGRAMS from JMOR, for a 9N wired as 12VOLTS. Get the MANUALS and Wiring Pictograms and diagrams For reference is a page with the 9N/2N Wiring config for the OEM 6V/POS GRN system after s/n 12500; all were wired the same. NOTE: If you are using a 3-WIRE ALTERNATOR, you also need to add additional wiring from ALT to Ballast Resistor as shown by red dashed lines. Start here with correct wiring to begin with and don't waste time mucking around with aftermarket junk sh!t wired wrong.

Tim Daley (MI)