so i dont want to pay some douche $70 to install somthing i can just do myself......i have 1 two channel amp and a box with two 10's in it tell me if this is right.........wire from the battery goes to the amp......AV cable head unit goes to the amp......ground wire to the chasi.....speaker wire to the subs is this right .........does anyone have a link with pics or instructions to do what im doing ?????????