Nice drawing. Looks easier to follow than factory ones. I guess it doesn't hurt anything to leave the second wire hooked up, but no it does not appear to do anything. I know some put a volt gauge in place of amps. Does that use both wires or grab a local ground? One thing I don't get is the size of fusible links. 14 for charging and 16 to feed the entire electrical system? Are those just a piece of wire that gauge? I see that is not just yours, but called for in the MAD instructions. Just seems undersized. and why a 'fusible link' vs fuse or breaker?
