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8N Wiring


John Dillon's Avatar
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11-01-04, 09:19 PM   #1  
John Dillon
8N Wiring

Recently bought a 1952 8N (it had been converted to 12V system) and was in the process of changing the oil when I got the wire going from the ignition/battery to the alternator pinched in the oil filter cap. It was hidden so I couldn't see it. Went to start it up and the pinched wire caused all of the wiring to burn up (melted all the covering).

I replaced the wiring that was fried- the wire from the alternator to the resistor (the part that was fried from the oil filter to the resistor) and the ignition (the ignition wires were fried from the ignition to the ammeter and from the ignition to the resistor). I assumed that since none of the other wires were fried, they were OK??

However, after I replaced the wire and went to start her up, nothing...just the very slightest tiny click about every 3 times I turned the key.

Could I have fried the battery or starter or ammeter??? There are no fuses, correct?

Please help, I haven't even had a chance to drive it around for more than 2 minutes since I bought it.

Annother note: The wiring had a diode connected coming out of the resistor that went to the alternator. I've been told that a diode isn't needed with a 12V system. I tried wiring it with a new diode and without....neither worked.

Thanks in advance for any advice.

 
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11-01-04, 11:31 PM   #2  
Hello John!

Sorry, but I have very little experience working on large tractors. I am a little familiar with the 8N, but not so much that I know the wiring off the top of my head. Check the power supply starting at the battery and work your way to switch and solenoid. Do you have a volt/ohmmeter? A test light at least is needed, a VOM even better.


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

God bless!

 
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11-02-04, 05:30 AM   #3  
I've owned a 8N myself years ago. It's a nice piece of equipment. You'll need a VOM to do some checking. Sounds to me like you just ran the battery flat when you burned up the wires. A voltmeter would quickly tell you if that's true and if not just where the big voltage drop occurs when you try to start.

 
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11-07-04, 08:54 PM   #4  
John Dillon
I tried charging the battery, but it wouldn't charge. Put in a new battery and wiring (with new diode) and it's working well.

Thanks everyone for your input!

 
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11-09-04, 12:38 AM   #5  
Glad you got it fixed!


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

God bless!

 
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