i've always been skeptical about ground wire kits. i've done alot of reading on them and talked with ppl who have them. It'll actually to do wonders to ur stereo setup, to my suprise. since everything is properly grounded ppl say the sound is a lil better. also i've read that ground kits will usually help if ur have an older car cuz it helps to replace old sheit w/ new. i'll buy some later down the road to see for myself.