Dimming headlights when bass hits when idle

[connersdad19 10+ year member]

if it is bigger it must be better? did i miss something?

i have always done my big 3 in 0 gauge....not like it costs alot more anyways...

 

[Muzzy 10+ year member]

Cheerz 4 the replies! Ive gone and bought the 4ga cables. ive noticed that my amps power wire is considerably smaller! Could this be causing my dimming headlights? The wire is not getting hot. Theres also only a 20 amp in line fuse connected aswell. And lastly i cant find the engine block ground. Can u attach it anywhere else?