Posted by Steve@Advance on April 02, 2014 at 18:38:25 from (107.203.134.67):
In Reply to: need electrical help posted by AngeloB_1973 on April 02, 2014 at 16:57:14:
The wiring on the old tractors was very basic and simple, so don't be afraid of it.
If you want to keep it 12v, one thing you need to look for is did everything get changed over from 6v to 12v like the coil and lights.
Also it may have been positive ground. The alternator will require a negative ground system and the ignition coil will need to have the + terminal wired to the ign switch, and the - terminal to the distributor lead.
The alternator wiring will depend on which alternator was installed. Most common is a Delco 10SI. Here's a diagram:
http://autorewire.com/tech/article/Delco10SInandd. html
A trip to a good auto supply with wiring supplies will be helpful. The split plastic harness wraps make for a neater job. Soldering and shrink tubing provide a more trouble free result.
Might take a look at the alternator mount, see how well everything lined up, the pulley is right for the belt size, everything is tight, etc.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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