I just recently swapped the stock alternator to a 135 amp one, but I was then told that I also needed to swap the cable that goes from the battery to Alt if I wanted to see a difference. I swapped it with a 4 gauge, but I wasn’t sure of which one of the two cables connected to the battery belonged to the Alt (thin or big). So I just connected the 4 gauge wire directly to the battery without disconnecting the two that were already were there. I just want to know which one is the cable I can disconnect at the battery and if its even necessary to disconnect (will it draw electricity from the battery even if disconnected at the Alt)?
Thanks in advanced!!!