[Zeke]

Great find. The rear humps on the C4 really wake that car up. Best 996 there is looks wise.

On powering up, Tony Callas would tell you to bring it up slow with a variac. Now since those are for main house line voltage AC, they are not for 12v DC. Find something. If nothing else, use lower voltage batteries and resistors. Don't disconnect once you get voltage flowing, you can leapfrog the next step. Give the steps a few minutes each so you can watch and listen. Likely there will be no problem but you could create one by just placing 12 volts on the system suddenly. The least you can do is plug in a 9v smoke alarm battery at first in the fuse panel in the correct place. There is no significant amperage. I always leave a 9v battery connected when disconnecting the main battery. You'll need the radio code too.