hi folks, i some advice? i have just installed a amp and a sub in my s3 02/52 without bose, i started off by reading a few of andymacs post and ran a power lead direct from the battery to the boot and i had already disconnected the stupid subwoofer that Audi most of found in a skip i took apart the sub and got the little amp out and sealed it up and plugged it back in so the rear speakers would work and also used the speaker wire that goes to the little amp to connect a rca converter, its all working but i need to connect a remote as the one i used is no good and the quality of sound is **** cause i have to turn my amp up tp full to get any sound from the sub, what i have realised is that one of rca's is not working even when use the HU and move the fadar to the rear and balance to left only the rear speaker works but if you move the balance to the right the rear speaker and sub works any ideas? as this is doin my head in? i have used the wrong thing should i've got a mini iso to rca? if so which one and where to get it from?