every time turn down my music down to 0 i get a bass kick out of my sub.. it happens when i high beam, indicate, and skip through radio stations and songs.. i just hear a loud thud.. what can this be? a connection problem maybe?

i recently replaced my rca cables.. would something like this occur if my rca cables were not plugged in properly behind the head unit coz my connection to the amp seems to be fine.

its driving me crazy!! also i busted the interior light fuse and replaced it with a 'spare' fuse that came in the cars fusebox.. i know this seems kinda irrelevant, but can that somehow have something to do with it?

cheers guys