I’ll start with a welcome to the Forum
@Skipper7E
My first inclination is to say “of course” but it sounds like this is a previously owned boat, having looked at your resume of boats and sailing certificates, you would know that Owners sometimes modify their boats.
The normal configuration would be to have the ground go to the motor.
Do you have a starter battery and a house battery bank?
It sounds like you will need to start by mapping out your electrical system. I’d start with the motor and work from there. Should be a large wire running from there to the house battery perhaps with a ground bar near where it connects to the battery.
Did the owner give you a copy of the Hunter Manual? That would help. You can find a copy on line. Always good to have another Washington Sailor here on the forum.