706 alternator

They are ok on high speed engines like on boats, but not on slow turning engines on old tractors.

The three wire hookup on the internal regulator alt is just not that difficult and Delco made jillions of them.

The R 1 or 1 spade is for an idiot light or a separate switch to 12v. It turns the alternator on. If you don't attach a light or switch this connection will run down the battery when parked and won't let you shut off the engine. I have a 641 and a JD done both ways.

The F 2 or 2 spade is hot all the time and is best connected directly to the large battery post on the back of the alternator. In a one wire alternator this connection is built into the regulator.

The large post on the back of the alt is hooked directly to the battery or to the battery connection on the starter, whichever is shorter. Use at least a 10 gagewire for this. The other wires don't need to be larger than 16 ga

Forget the part about not letting you shut down the engine, this is only with gas engines.

Okay, that means that you are internally regulated and really don't need the third wire.

The big 10-gauge wire should be your hot wire for the big output post (Test it first to make sure it has 12 volts, when unhooked). The yellow wire is the 'exciter' circuit from your ignition.

Bet’cha if all is well within the alternator, if you hook that little yellow wire to the outermost spade at the rectangular plug, you're gonna be back in business.

Allan

Okay, that means that you are internally regulated and really don't need the third wire.

The big 10-gauge wire should be your hot wire for the big output post (Test it first to make sure it has 12 volts, when unhooked). The yellow wire is the 'exciter' circuit from your ignition.

Bet’cha if all is well within the alternator, if you hook that little yellow wire to the outermost spade at the rectangular plug, you're gonna be back in business.

Allan

I've never understood those Delco designations on the alternators. Is the little plug on the alternator square or is it rectangle shaped?

And is this the same as your old alternator had?

Allan

The Delco plugs come in at least two different versions, like this(-- --) and this (I I). I believe the first one is for an external regulator but not sure. I know the second one is for the internal reg.

Yes Sir,

You're right, that is how they are laid out; guess I wasn't making myself clear and was just a lookin' at the physical properties of the outside of the plug. :>)

Sometimes my mouth and my old brain don't connect as they should. :>)

Have a good one,

Allan