D6c alernator wiring

Not familiar with your exact alternator, but I wonder if your ammeter is burned out, so there is actually no electrical load or maybe no connection to battery.

Test for voltage at positive pole of alternator with engine stopped. You should have same voltage there as the R terminal/battery positive post.

The hot cable from the alternator should go to the + terminal on the ammeter,from the - terminal the wire should go through the circuit breaker to the main + battery cable terminal on the starter motor,the power feed for the heat/start switch should share the ammeter - terminal,the power for the glow plug relay should connect with the alternator on the + terminal,take the hot cable from the alternator and connect the volt meter to the alt terminal and the other lead to a good ground,start the engine and see what is the voltage at high idle,if you are getting more than 26/27 volts the alternator has an issue,if it is putting out 36 volts will cook the batteries,36v alternators are used in marine and aviation have a look at the tag.why did you have to go behind the dash to wire the alternator?.
AJ

This a dozer i'm opperating at the moment. there was no altenator on it. They bought a self regulating ITR brand alt for me to put on it. The batterys are being charged but i know the wires are not in the right place.
So instead of running a wire all the way to the positive terminal of the battery(from the R pole on the alt) all i have to do is connect to the positive terminal on the stater?
The ground from the alt can be earthed anywhere on the machine?

Here's how it should be wired.
If it's a 36v Alternator it is the wrong application.