2006 48V Club Precedent install Madjax Convertor

[eonlinepro]

My wife wanted her golf cart refurbished and radio installed in her golf cart for Christmas. I really didn't know what I was getting into so I could use some help. I've already repainted the entire body and replaced all screws and batteries. Now, it's the final touches on the electronics.

I now understand about voltage conversion, and have purchased a madjax MU1230 48v convertor along with a 6 system fuse block by Sea Systems since I may as well install some headlights and a USB charging port.

I'm almost done but can't figure out how to:

1. The 48V reducer is connected to the positive on battery 1 and negative on battery 6. (Battery 1 is under driver) and then the output on the reducer goes into the fuse block but then this is 16v. The reducer says it is a 48V convertor system so I think I need to find an input from all the batteries vs. only two. How do I do this?

2. How does one wire the madjax into the key switch?

3. The Sea System block has a negative connection but madjax doesn't have an output. I tied both negatives into a negative battery connection. Is this correct?

Once above is done, my guess is now I go ahead and wire up the accessories to the sea system fuse block.

Can I get some expert help here? I've already repainted everything and really need to finish this project before my wife makes me sleep in the garage next weekend.