discharge/overcharge?

sorry if it was hard to read i was just trying to get all the info in there i could think of, thanks for the replies, im gonna do that mad upgrade tomorrow, ill go get the necc parts and change all that over, not sure if it will fix the problem but im sure it wont hurt to go ahead and update that stuff anyway.
trailbeast, i didn't try to add that 10gauge jumper, ill give that a try also tomorrow and see what it does, should i leave everything stock hooked up and just jump that over and see what it does, also that 15.5 volts at the battery terminals is at idle without raising the rpm's.
67dart273, info is very helpful, i will try that stuff tomorrow as well, i feel like the ground to the VR is good as i ran a ground to the battery ground to the VR case but i will ohm it out and voltage drop the ckts.