Just throwing this in here, i had 2 12 inch audiobahns and a 2000 watt class d swiss audio amp in my caddy , lights would always dim when i had it cranked and it hit. Added a 2 farad cap and it made a huge difference.Lights didnt dim and i never had any problems with it.Ran the system like that for 2 years.It is just a bandaid fix, but it did work.