I'm not a guru. I would consider myself to be electrically challenged. I just did a lithium build. There are plenty of folks on here with a wealth of knowledge and experience on here who can help. I could not have completed my build without the help from folks on here!
If you want a good laugh at my lack of electrical knowledge, here is my build thread:
http://www.buggiesgonewild.com/lithi...ld-thread.html Most of the BMS and battery wiring is discussed after some where around post #160.
I would suggest looking into Zeva or Chargery BMS's. Pretty nice setups for us folks that are newer to the game. Of course you could build your own.
Hope this helps. Good luck with your build!