when i order the fronts replacement, i also order some yellow universal pioneer coaxials, you can get speaker adapter off ebay, there got the renault plug on one side and spade connecters on the other side. i then got me a poineer underseat sub and fitted under the passager seat, and connected the signal input into the rear adapter (avoids cutting into the cars loom), and sliced into the 12v output/cigerette lighter for the remote. the system sound mint, just about right without sounding like boy racer.