Is it ok to ground an amp to the same place as the rear demister? would it hurt anythin?

thanks guys
Azzy

oh and are StreetWires cabling kits bad? co i just bought one and some zero noise RCA's n i forgot to get 2 pairs lol so now i gotta spend another 40 bucks on RCA's and a remote wire.

as long as the earth connection is good and strong I cant see it causing any problems.

Streetwires, well........I use their RCAs to run my sub amp/s no worries at all....(even with one side crimped after some tool bolted the seat in with the cable under it) being the dodgy prick I am just taped it up and away we went.