relay for remotes

i used a 30 amp relay for the remotes for my amps so that i can also run neons and wire my cigarette lighter from the same relay so that everything turns off with my radio. right now, all i have hooked up to the relay is my two amps. will that much power in the remote wire mess up my amps. it works fine, but i blew up my 4-channel the other day, and i was wondering if that might have had something to do with it