C3-PO-wer

Hey, had a new head unit for my C3 with standard ISO connection plug it in and it worked: cool i thought : so i tuned in a station and turned it off Turned it back on and station was still there cool I thought again went and had a cup of tea came back out and the battery was low (central locking wouldn't work) even though the unit was off turned it back on and the station was lost scratching head I went to the radio manual (for the first time) and had a read I've got it permanent and acc power the wrong way round Swapped the wires and yes it worked But stayed on after swiching the car off More head scratching Sitting in the car reading all the manuals now when suddeny it turned off Whaaaaat theee heeelllllll Head now almost scratched off Turned on the car radio came on Turned it off radio stayed on Turns out for anyone out there like me (scratching) that after about a minute the acc circuit turns off and the radio will go off How ever you then get the added bonus that the clock doesn't change keeps time but only works when the ca is off so you get to time all your journeys because as soon as you start the car the clock stays at that time until you turn off and back on again. Now for my BIG QUESTION Has anyone out there installed a new head unit that works the stark controls(or the other way round) and doesn't bugger up the dash display and time