Charging System

[shadowblue89]

Just me,
Chris is right it sounds like your battery cable is bad. If you do replaceyour cables go to a Welding Supply store to get the new wire, just remember to ask for cable not wire(wire to them means something different us). The welding supply stores are the cheapest place to get really good wire for your battery.
Another thing to take note on is the fact that since your battery is in the trunk the negative cable is no longer connected right to the block and you are now relying on a very thin braided cable(on the back of your drivers side head) to ground the motor to the chassis which the alt. needs to charge your battery(especially if you have a big stereo system). Just more food for thought.