Electrical necessities

[Jared102000]

Well hello everyone. I've been lurking here for a couple of months reading posts and familiarizing myself with as much as possible. I've recently got my truck running pretty good. And am now focussing on fixing electrical issues. While I think I can find my current issues which is a drain. I wanted to ask what was required to keep in order for the electrical to function properly. The truck is a 65 chevy that the previous owner upgraded to HEI ignition, I also think the alternator has been upgraded. I'm mainly concerned with the group of electronics that contain the reg. and relays maybe. I've included pics of the it all just in case someone sees something wrong. Thanks in advance Jared