The alternator on the vehicle should have more than one wire to it. Can you take a picture of what you have and upload it for me to see?
Also, if the battery is good, there should be power to the solenoid. Are you getting power to it?
Let me know. Also, I attached a picture of the alternator connections I feel you should have. Let me know if it is correct.
See pic below.
Friday, October 7th, 2022 AT 7:56 PM