Audio Systems: pioneerDEH-780 supertunerlll, vehicle questions, hookup

Question
wiring diagram to install this used unit

Answer
I could not find the model number you gave.  But, I think it would be similar if not exactly the same as this model:

http://www.pioneerelectronics.com/pio/pe/images/portal/cit_11221/50386594install...


It shows the whole installation layout as well as the wiring diagram for hookup to your vehicle.

Questions?