thanks all,

I am looking at my rats nest of old and new wires under the hood, and mostly old wires under the dash, and I'M trying to figure out what voltage it was when it was parked. It looks like the original fuse block under the hood on the drivers side, I'll get pictures and post them. there are alot of old wires with exposed wire and some that are just broke or cut... just another challenge to overcome :>).. I'll be looking at the charging system and accessories next.. My bet it is still a 6v...
thanks for the suggestions on battries. I will deffinatly look in to a battry tender ( maybe even one for my Valk..)