Rainmaker:
Are you running true xenon headlamp assembly (separate transformers, levelers, etc), or are they "xenon/halogen bulbs in the stock light assemblies? If the latter, they could be drawing more than standard wattage halogens. If this is the case, you could cut some of your total system load by using Euro 500E headlights with standard bulbs. Running a relay switched heavy gauge wire circuit for each lamp should also help with the 'pulsing to the music' problems.

You are working with a closed system, and using a larger rated alternator and heavier current draw is going to cost you a few ponies. If you want to keep the HP, I would exhaust the energy conservation routes first, starting with standard wattage bulbs in a premium +30 mode like Michael's car, with Euro lights for a better beam pattern.

BTW, I am contemplating a Nak CD45z or TA25 head unit for my MB. Any insights on the TA25?

__________________
John

2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)

Click to see 87 300E