2012 VN 780 No stereo in bunk

Did u figure out.. i have 780 and still cannot figure out. I bought a amp from junk yard but i do not have harness in upper cabinet. Am lost!!!!!

 

Goto junk yard and get all the wiring off a 780 volvo for the amp to radio and back speakers.. mine came with. I just changed out radio and put in an amp for a aftermarket sub.. lots of sound now. If u do aftermarket radio make sure u get the harness for volvo radio too. I had 8 channel in truck and keep incase i need to upgrade ecm or transmission.

 

I need radio wiring diagram for my Volvo 780 I have a amp but want to put in new radio some fool cut wires and hooked up some junk radio I want to upgrade but dont know what wires go where.