Ford 860 12 volt conversion

OK - so I know this topic has been covered ad nauseam, but I apparently still don't get it. I know that John in LA and others have been extremely patient, but I'm hoping for some guidance one more time. I'm converting my '56 Ford 860 to a 12 volt negative ground system. I bought a kit that included a one wire alternator, but it does have two additional spade connectors covered by a rubber grommet. As usual, the wiring instructions weren't clear, but here's what they had me do:

Red wire from the alternator post to the ammeter guage. The guage looks aftermarket and has a "+B" post and a "+L" post. I have connected this wire to the "+L" post.

Red wire from the battery side of a 4 post relay to the "+B" post on the ammeter.

This is the one that wasn't clear: Blue wire from the hot terminal block to the "+L" ammeter post. If I disconnect this wire, the starter won't turn.

Yellow wire from the "bat" post on the ignition switch to the hot terminal block.

Orange wire from the "I" post on the relay to the hot terminal block.

Yellow wire from the "S" post on the relay to the starter switch.

Blue wire from the "ign" post on the ignition switch to the other terminal block.

White wire from the other terminal block to the positive side of the coil.

I have a new battery, starter, alternator and relay. The tractor barely turns over and I get an error indicator on the battery charger after a few minutes.

Any help would be greatly appreciated. Charlie

You are trying to pull your power threw the amp gauge.
The blue wire hooks from the terminal block to power. If you want to hook it to the amp gauge it will have to be hooked to +B because that is where you have the battery hooked to. Hooking it to +L or the alternator side of the gauge makes power go threw the gauge before it gets to the terminal block of key.
If it were me I would hook the blue wire from terminal block hot side to the battery side of the 4 post relay.

The orange wire gets hooked from the I post on the relay to keyed terminal block post. The same post the coil wire hooks to.

I do not have a diagram with the 4 post relay and a amp gauge because the amp gauge was used on 800 tractors and the 4 post relay was used on 801 tractors so let me explaing something.

Look at this diagram. Wire your tractor to it. The only thing you should change is I have a wire running from battery post on the alternator to the battery side of the 4 post relay. Install your amp gauge in this wire.

John:

Thanks for your help - it is much appreciated. I still can't get the damn thing to start, but at least the starter turns with some conviction. Thanks again - Charlie