Done all this guys, getting my fella to bring me a diff amp.......don't no what else to try....need to try it in someone elses car - but no-one I know got a system in

The full system worked in my old car........I transfered the lot over to the cossie, but re-wired it with brand new kit - and it aint worked since then, checked al the fuses their ok - im soooo stuck and P***** Off with it!!!!