Ignition Key 3 to 2 wire wiring help

icephan2000 · Oct 20, 2018

Disclaimer: Mechanically illiterate.

'49 8N, 12V converted.

This is my current wiring arrangement when purchased. I want to delete the wonky 3 wire ignition switch and replace it with the proper 2 wire, 2 position switch. HOW do I install? And I'm not seeing/finding the "factory resistor block" I've been told to use..?? I've been told the resistor is from the conversion. LOST and all alone in the Pea Patch!

Den N Ms · Oct 20, 2018

Icephan,Google Ford 8N tractor wiring diagrams by JMOR,then pick your setup.

icephan2000 · Oct 20, 2018

(quoted from post at 16:36:28 10/20/18) Icephan,Google Ford 8N tractor wiring diagrams by JMOR,then pick your setup.

I've done so earlier, but nothing seems to fit.....mechanically inclined pal over tomorrrow. Maybe then??!!

Dollar Bill · Oct 21, 2018

Icephan, welcome to the forum - Glad to have you!!

I don't see a battery in your drawing but if you use this diagram, you should be good to go.

(Courtesy of JMOR)

Tim PloughNman Daley RIP · Oct 21, 2018

FORD front mount distributor: The OEM Ballast Resistor must be in the circuit whether if 6V/POS GRN or 12V/NEG GRN. Know that 99.98% of all non-starting issues are due to mucked-up/incorrect wiring jobs regardless if 6V or 12V and a good percentage of those are from 12V switch over jobs done by fellas who have no clue what they're doing or why. Often guys think their non-starting issue is the fault of the 6V system and their ?solution? is to convert to 12V. That just ain?t true. If it doesn?t start/run now on 6V, what makes you think it will on 12V? There are about a handful of reasons to convert, but non-starting isn?t one of them. I guarantee you when your 6V system has issues it simply can be remedied with a distributor rebuild and wired all correctly per OEM diagrams, guaranteed. On the front mount distributor tractors, the ballast resistor must be used on a 12V job. The generator is removed and replaced with an alternator. The Voltage Regulator is also removed altogether. If you use the OEM 6V coil, you need to add an in-line ceramic 1-OHM resistor in the circuit -not shown in the 12V diagram below. If you invest in a square 12V coil (recommended) you do not need the extra resistor. Get the better OEM 2-wire key switch, cloth covered, not vinyl exposed wires. p/n 8N-3679-C from nnalert .

FORD 8N-SERIES OEM 6V/POS GRN WIRING DIAGRAMS:

Tim *PloughNman* Daley(MI)

icephan2000 · Oct 21, 2018

(quoted from post at 04:41:19 10/21/18)
FORD front mount distributor: The OEM Ballast Resistor must be in the circuit whether if 6V/POS GRN or 12V/NEG GRN. Know that 99.98% of all non-starting issues are due to mucked-up/incorrect wiring jobs regardless if 6V or 12V and a good percentage of those are from 12V switch over jobs done by fellas who have no clue what they're doing or why. Often guys think their non-starting issue is the fault of the 6V system and their ?solution? is to convert to 12V. That just ain?t true. If it doesn?t start/run now on 6V, what makes you think it will on 12V? There are about a handful of reasons to convert, but non-starting isn?t one of them. I guarantee you when your 6V system has issues it simply can be remedied with a distributor rebuild and wired all correctly per OEM diagrams, guaranteed. On the front mount distributor tractors, the ballast resistor must be used on a 12V job. The generator is removed and replaced with an alternator. The Voltage Regulator is also removed altogether. If you use the OEM 6V coil, you need to add an in-line ceramic 1-OHM resistor in the circuit -not shown in the 12V diagram below. If you invest in a square 12V coil (recommended) you do not need the extra resistor. Get the better OEM 2-wire key switch, cloth covered, not vinyl exposed wires. p/n 8N-3679-C from just 8n's .

FORD 8N-SERIES OEM 6V/POS GRN WIRING DIAGRAMS:
<center><img src="https://i.imgur.com/CfuUUP3h.jpg"></center>
<center><img src="https://i.imgur.com/rxNF128h.jpg"></center>
<center><img src="https://i.imgur.com/lz8RwfQh.jpg"></center>

Tim *PloughNman* Daley(MI)

Thanks Tim for the detailed reply. I'll show this to a McGyver type buddy today for him to read and understand! Things are easy if you know what you're doing...I guess I don't! What I am seeing that's missing is the resistor assembly that most wires are running through...??? Though Ethel runs, I'd like things to be put right so as to be able to follow along vs as a friend said "her daddy's Southern engineered tractor.

Ignition Key 3 to 2 wire wiring help

icephan2000

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Den N Ms

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icephan2000

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Dollar Bill

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Tim PloughNman Daley RIP

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icephan2000

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