do you really need a wiring diagram ? why not just use
the adapter plugs like everyone else does...
bare wires on one end (marked) w/ a plug that mates to
the factory wiring harness...then you dont have to cut any
FACTORY wires...
walmart/bestbuy/circuit city all sell the make / model and year
harness/plug adapters.
all of those also sell the radio removal tools too...