The original wiring is as follows,
Power connector
Pin 1 thick orange/black 12v memory
Pin 2 thick black/green ground
Pin 3 thin blue/black 12v ignition
Pin 4 thin orange/black 12v sidelights
Pin 5 thin black/orange alarm (not always connected)
Pin 6 thick black/green ground
Speaker connector,
Pin 1 white/black left front
Pin 2 grey/black left front
Pin 3 white/violet left rear
Pin 4 grey/white left rear
Pin 5 white/red right front
Pin 6 grey/red right front
pin 7 white right rear
pin 8 grey right rear
nigel
January 2011