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Resistor assembly on 8n

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Ricko700

10-24-2007 16:06:05




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I jusr got a 12 v conversion kit from Just 8n"s and the instructions are kind of vague. Is the original resistor assembly grounded to the back of the dash with those 2 slotted screws at the bottom? I guess the hooded lookin doodad on top is the resistor with the 2 threaded studs for attaching the coil and additional new resistor supplied with the kit..the directions show to attach the ampmeter wire to one of the slotted screw locations at the bottom of original resistor at waht they say is the junction post but if this is grounded and the other wire out of ampmeter goes to the battery how will that work?? Seems like its putting juice through the ampmeter into the frame of the tractor..what am I missing?

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Dunk

10-24-2007 18:34:44




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 Re: Photo in reply to LeeMo, 10-24-2007 16:06:05  

Ricko700 said: (quoted from post at 22:32:31 10/24/07) Yeah I know...Im electrically challenged ..but..what I was saying is I have NO 3rd terminal on the bottom as shown in that pic..it looks like it was melted away some time in the past. I was asking if maybe I couldnt wire nut all those other wires together instead of buying and waiting for another resistor assembly? I have a 12 v system now so no vreg rite?


Yes, I agree!!

You should just be able to wire nut them all together, that is all that terminal does!!

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Ricko700

10-24-2007 16:30:13




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 Re: Photo in reply to Bob, 10-24-2007 16:13:36  
Is that third stud insulated from the top 2??



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Ricko700

10-24-2007 16:26:57




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 Re: Photo in reply to Bob, 10-24-2007 16:13:36  
Ok looks like mine which is front mount 48 8n except there is just a 3/16" or so melted looking hole there where the stud used to be..now what?



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Dunk

10-24-2007 16:45:45




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 Re: Photo in reply to Ricko700, 10-24-2007 16:26:57  
That stud is a stand alone, insulated from everything else, bolt to put (hold) 2 (or more) wires together.



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Ricko700

10-24-2007 16:49:18




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 Re: Photo in reply to Dunk, 10-24-2007 16:45:45  
So I guess now I can just bunch em up and wire nuttem together and tape em up?? ampmeter, lights, key switch??



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soundguy

10-24-2007 17:08:47




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 Re: Photo in reply to Ricko700, 10-24-2007 16:49:18  
I think your trying to make this real hard here...

3 terminals and 2 mounting screws... here's the skinny.. use the 2 mounting screws to mount the block to your dash.. now forget about them.. you never mess with them again unless you replace this block.

That leaves you with 3 terminals.

bottom terminal is all by itself....one side of the ignition switch goes there.. bat line from the vreg goes there.. if you have lamps.. their switch gets power from there. will be a wire from there to the ammeter, and then from the ammeter to the battery or hot side of starter relay.. etc.

now... the other side of the key switch goes to ONE of the TWO top terminals... there is a resistor element between the two top terminals.. the other top terminal that is so far unused then has a wire run from it to the coil, or if you have other resistors you need to add inline, it runs to them, then from there to the coil.

the electrical systems on these tractors are SUPER easy.. don't overthink them..

Soundguy

Soundguy

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Joe)NYC)

10-24-2007 19:34:12




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 Re: Photo in reply to soundguy, 10-24-2007 17:08:47  
Soundguy,
I have a 851 with 12 volt conversion and I may have a charging problem. Would these instructions apply to my case? I ordered a set of manuals from Faxon Auto Literature 2 weeks ago and didn't get them yet. They claim 2-3 day shipping. Yeah, right. Thanks.



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soundguy

10-25-2007 04:47:30




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 Re: Photo in reply to Joe)NYC), 10-24-2007 19:34:12  
Your 851 won't have an ammeter.. it won't have a dash mounted resistor block either.. so no.. not the same wire diagram.

search the archives.. there are more wire diagrams posted every day than i can shake a stick at... probably find one for your x01 in the last couple pages here or on the ford board last couple pages.

Soundguy



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Joe)NYC)

10-25-2007 13:10:02




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 Re: Photo in reply to soundguy, 10-25-2007 04:47:30  
Soundguy,
Well, I know it's supposed to have an idiot light but apparently the seller or someone else put an ammeter on it. I know I may have problems because when I turn on the ignition switch the ammeter reads slightly on the plus(charge side) and I know that's wrong. I will reverse the wires. When the engine is running and revved up it seems to stay pretty much on center. Next time I go up north where the tractor is I will give it the voltmeter test for alternator output and I'll go from there. Thanks for the info.

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soundguy

10-25-2007 14:02:49




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 Re: Photo in reply to Joe)NYC), 10-25-2007 13:10:02  
Do swap the wires and the volt meter test. May be as simple as that.. ( if you find a problem with the alt.. etc..)

post back with what you find.. I've got to hurry off to work.

Soundguy



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Ricko700

10-24-2007 18:32:31




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 Re: Photo in reply to soundguy, 10-24-2007 17:08:47  
Yeah I know...Im electrically challenged ..but..what I was saying is I have NO 3rd terminal on the bottom as shown in that pic..it looks like it was melted away some time in the past. I was asking if maybe I couldnt wire nut all those other wires together instead of buying and waiting for another resistor assembly? I have a 12 v system now so no vreg rite?



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soundguy

10-25-2007 04:45:00




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 Re: Photo in reply to Ricko700, 10-24-2007 18:32:31  
Naw.. don't wire nut them, instead place them on the ammeter post. Treat the ammeter post as that 3rd terminal... wire as normal.. etc.

Soundguy



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DON TX

10-24-2007 20:35:06




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 Re: Photo in reply to Ricko700, 10-24-2007 18:32:31  
The missing stud is a junction for the wires you mentioned. Wire nut 'em. The 12v alt. should have internal regulator. No vr. When you get the new resistor it will be "intuitively obvious" how to replace. How's that Dell? (%^) HTH
DON TX



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