I am trying to figure out how to move the seat to access my battery on my 39 Dodge. I know it’s under the front driver seat but I can’t budge the seat to see the battery cover. There is a knob sticking out of the front side of the drivers seat and I am wondering if anyone can tell me how to move the front seat out of the way to get to the battery. I am putting in an optima Red Top 6v