Haven't bought it yet. I'm going with one of those Fleabay $100 specials running android and with a GPS, reversing camera etc. But as with most of those cheap units the information is vague. But I found one listing that shows all the pin outs in the sockets on the back. So Dad and I were going through all those pin out and matching them to the wiring diagram of the car. So technically when I do buy it I wont have to screw around looking for wires because I know which wire goes where.
Combat Shock - Warbringer