ya know MOS with the 24v system you could split it into normal 12 for the car, and 12 for just the audio.... That could be very cool. Headlights will dim with ANY size alt, so the alt may be fine. My old 180w amp would dim lights greatly even. Get the voltage checked on the car when it'* running off the alt, and that will tell if you need to replace it. Just one audio amplifier likes yours is fine for the stock alt, which is pretty beefy even for a stock one. You may have a bigger one as well with the SSEi.
'06 Vee Dub GTI 2 door Tornado Red
- 2.0 Turbocharged, Intercooled, Direct Injected, 6 Speed DSG, Underbody Aero, 17" Classix
- Moonroof, Bi-Xenon headlamps, Interlagos Plaid Sport Seats, 6 Disc In-dash, iPod integration, GTI Monster Mats (winter)
'93 Bonneville SE Purple Pearl H4U package - picked up June 23, 2003, Traded-in June 28, 2007...