I had two batteries and a regulator go on me in 12 months till I remembered reading about an easy fix for the badly designed oem wiring that wasn't charging my battery properly. Who knows, you may have the same prob???
It is pretty easy to check. Buy a cheap portable volt/amp gauge with the two prongs and see for yourself what amount is charging your battery. In my case, from memory I was just charging enough to keep my battery alive but put a gps and music into the equation and you can see why my batteries weren't charging. I then did the thicker gauge wire bypass straight from the regulator to the positive side of the battery with an inline 30A fuse and voila. I go from below 13v charging to 14.7V in one foul swoop.
I think there's something on this one in the Tech Vault.
