do these things work at all? of course im going to do the big 3 and try and eliminate some noise and light diming. but will these help if i just add a few on certain areas just for the heck of it? also, i seen filters that you just wire up and others which connect to rca's. i assume the rca plug-in style filters are for connecting to the amps and NOT the HU ? not sure though. never used 'em before. just i seen 4 for $10 plus shipping so i was wondering if they were worth trying. if they dont help much at all, i wont bother. anyone use these things or have any thoughts? thx!
