Was running but now after pulling alternator wire, it won’t run

You still have the alt wires going into the Ammeter on the dash? take off the main alternator wire. leave it off. Run a NEW thick gauge wire from Alt to Battery positive and see what you get.
How are you determining your alt doesnt work?
I checked using a multimeter. Alternator is only showing battery voltage. I also did the negative battery cable trick. If you pull the negative and the car shuts off it’s the alternator. Also I don’t have anything going to the voltmeter in the dash.