All your lights and accessories should already bypass the ammeter. The ammeter does not indicate amps going to the 10000 watt stereo from the alternator. It reads amps going to and from the battery. If you try to run the 10000 watt stereo from the battery without running the motor, it will peg the meter. That is why you have a fusible link between the ammeter and the battery. You DO have the fusible link, right?
