First step: Disconnect the negative wire to the battery.
Step 1: Amplifier Location and Install
Don't forget if you have some serious subwoofers you may need a capacitor to offset them dimming your headlights during heavy hits.
- Attach to the back of the subwoofer box
- Underneath the driver/passenger seat
- Behind the dashboard (smaller amps)
- Underneath the trunk near the spare
After you figure out where you want to install you amplifier. Go ahead and put it in this location, test the feel and fit. Install it so that when your get your wires to it, it will be ready.