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Ford 9N, 2N & 8N Discussion Forum
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Need some help!!! Part 2

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Ron11

06-04-2007 19:48:14




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Gentlemen,
I have a 9n with an 8n motor. I need to know which ignition resistor I should purchase - 9n(Part No: A8NN12250B) or 8n(Part No: A8NN12250A). (The old resistor is out of commission) I have also purchased a new wiring harness for an 8n front mount dist. but there are more wires than I have connections. I also need to know if it is OK to jump a 6 volt with a 12 volt battery at the starter (will it cause any harm?). I really appreciate all the help that you have given in the past and look forward to your future help.

P.S. I only have one wire connected on the bottom connection to the Cut Out Assembly (Picure above) For 2N, 9N, (Part No: B0NN10505A)There are connections for two. Problem?

Ron 11
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souNdguy

06-05-2007 06:23:23




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 Re: Need some help!!! Part 2 in reply to Ron11, 06-04-2007 19:48:14  
Ron.. here is a question we need answered befroe we can help you any more.

Does this 8n engine still have the front mount distribuitor.. or does it hav ethe side mount distribuitor?

Also..if front mount.. did you keep the 9n 1 wire genny.. or do you have the 8n's 3 wire genny?

This will help us tell you what wire harness to use, and what to do with the cutout.

Also... as someone else said.. the 2 wires on the igniton switch.. they are both fnctionally the same.. wire them to the 3 terminal resistor and mounting plate.. your manual has an electrical schematic in it...

get back with us on the questions I posed..

soundguy

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Ron11

06-05-2007 12:53:13




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 Re: Need some help!!! Part 2 in reply to souNdguy, 06-05-2007 06:23:23  
It has a front mount distributor - genny has 1 wire connection.



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souNdguy

06-05-2007 13:13:05




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 Re: Need some help!!! Part 2 in reply to Ron11, 06-05-2007 12:53:13  
With that info.. you should have got the 9n wire harness.

Your cutout needs a connection to the armature, and then to the wire going to the back of the dash that provides ignition power and charge current to the battery.

Soundguy



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Dell (WA)

06-04-2007 23:45:54




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 Re: Need some help!!! Part 2 in reply to Ron11, 06-04-2007 19:48:14  
Ron..... .you write..... "I only have one wire connected on the bottom connection to the Cut Out Assembly (Picure above) For 2N, 9N, (Part No: B0NN10505A)There are connections for two. Problem?"..... ..only iff'n you want to keep yer battery charged or keep it from discharging. Usually the terminals are "labeled"; probably "B" for battery and "A" for armature, but I don't remember fer sure. LOOK CLOSELY. Then re-polarize. Iff'n you don't know or understand re-polarization, ask.

As fer which "infamous ballast resistor" to use. Use the 2N 'cuz that is what yer tractor DASH is. Electrically, either "infamous ballast resistor" is the same. Physically, the mount is minor difference.

Using an 8N frontmount harness is gonna give you problems, 'cuz yer 2N-genny is a 1-wire 3rd-brush using a 2-terminal roundcan cutt-outt under yer battery tray on the steering column. The early 8N frontmount engine uses a 3-wire genny and 4-wire squarecan voltage regulator under yer oil pressure gauge.

BE SMART, yer tractor is a 2N, despite having an 8N frontmount engine, gitta 2N wiring harness and most of yer problems will disappear..... ...Dell

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BillM (OH)

06-04-2007 20:58:41




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 Re: Need some help!!! Part 2 in reply to Ron11, 06-04-2007 19:48:14  
Is the 8N engine a front or side mount distributor - there would be a difference.



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BillM (OH)

06-04-2007 21:02:37




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 Re: Need some help!!! Part 2 in reply to BillM (OH), 06-04-2007 20:58:41  
Whoops - didn't read far enough - 8N engines do not have a cutout - replaced by a VR (with internal cutout) and ignition switch can be hooked up any way you want as long as it connects battery volts to coil when on.



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gahorN

06-04-2007 20:57:52




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 Re: Need some help!!! Part 2 in reply to Ron11, 06-04-2007 19:48:14  
Water needs to flow from one place to the other. Which end of the hose do we connect to which location? Answer: It matters not. Water will flow either direction thru a hose as long as each end can be connected.
All the switch does is make the connection. It makes no difference what color the wire is....hook it up.



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Ron11

06-04-2007 19:59:49




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 Re: Need some help!!! Part 2 in reply to Ron11, 06-04-2007 19:48:14  
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I have lots of questions. Here is another for you out there that know. I bought a new ignition switch at TSC and the wires are black and yellow. (Different colors than the old switch) Which one goes where on the ignition resistor?



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Ramrod

06-04-2007 20:04:29




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 Re: Need some help!!! Part 2 in reply to Ron11, 06-04-2007 19:59:49  
The switch wire colors just don't matter. It's 2 wires, place the new switch wires where the old switch wires came from.



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Ron11

06-04-2007 20:13:50




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 Re: Need some help!!! Part 2 in reply to Ramrod, 06-04-2007 20:04:29  
Ramrod,

I looked at that possibility but the old switch has horizontal connections while the new switch has vertical. If that makes any sense, let me know what you think.

Ron11



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Ramrod

06-05-2007 05:35:41




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 Re: Need some help!!! Part 2 in reply to Ron11, 06-04-2007 20:13:50  
OK, Ron, I'm assuming that you're pulling my leg here. Everybody knows about the change to vertical wiring back in '57! Just hook it up, the vertical wiring change will automatically make the transision and the current will flow vertically through the switch!



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