66 Mopar Electrical for Dummies?

Hi All! This is my very first post, but it surely won’t be my last. I am about to (I think!) buy a 1966 Plymouth Fury III. This new baby has a rebuilt 318 w/ a new alternator and a perhaps non-functioing voltage regulator that the current owner says is causing the battery to drain. He keeps a battery in the trunk, just in case. Yeah… Wow… I took the car for a drive. When I tried to accelerate, it was very slow to do anything and just felt like it wasn’t getting any power. The power steering is also in trouble, but that I can probably handle. Before I buy, I thought I would do some research on what I might be getting into w/ the electrical system. Turns out that reading about mopar electrical systems is like reading the written version of the teacher in the Peanuts Cartoon talking. Can anyone point me to a website, book, something that is for dummies w/ no experience in working on electirical systems? I need some help in plain language w/ some serious diagrams! Thanks!

Hi All! This is my very first post, but it surely won't be my last. I am about to (I think!) buy a 1966 Plymouth Fury III. This new baby has a rebuilt 318 w/ a new alternator and a perhaps non-functioing voltage regulator that the current owner says is causing the battery to drain. He keeps a battery in the trunk, just in case. Yeah... Wow... I took the car for a drive. When I tried to accelerate, it was very slow to do anything and just felt like it wasn't getting any power. The power steering is also in trouble, but that I can probably handle. Before I buy, I thought I would do some research on what I might be getting into w/ the electrical system. Turns out that reading about mopar electrical systems is like reading the written version of the teacher in the Peanuts Cartoon talking. Can anyone point me to a website, book, something that is for dummies w/ no experience in working on electirical systems? I need some help in plain language w/ some serious diagrams! Thanks! :-)