before I was at 13.5v at idle with everything on a/c,both efans because took the clutch fan out in put 94 Taurus efan plus the stock condense fan,headlight with hid 4x 6ohm 50w and tail and also my front side are switchback I have 4x 4ohm 25watt.now I installed led in the tail with 6x 4ohm 25watt now im getting 12.5v at idle which suck already have 160amp alt 1/0 wire for big 3 do i need to install different load resistor like 6ohm 25 watt or put a lower like 3ohm 25watt