ok this is my 1st post so hello to all , ive been all over the net looking for this big 3 issue i got . well i have a 2007 hhr and the battery is located in the trunk the alternator is a stock alt. and there is 3 power wires running out of the alt one is running thru the outer fuse box one i dont where its going one back to the battery do i need to just replace the one ruuning back to the battery ? and if so we are talking 17 ft run should i run 2 inline fuses? just need to try to get this completed asap as im killing my car with electrical issues. running a kicker 1500.1 and a rockford 400.2 0 gauge power wire and a Kinetik KHC2400 battery and a stock 115 amp alt, i need the big 3 but please help with suggestions on a trunk mounted battery tia