Hi everyone!
Ok--- 2007 Ford f150
AVIC D3 bought from a friend
not new to installing electronics
mute wire pulled out of rca harness relocated one pin beneath original position
green parking brake wire and mute grounded
red to red
yellow to yellow
black to black
blue to amp remote on
now heres where im lost....turn key on sound plays unit functions as it should
start truck sound quits...zero sound but unit appears to be playing normally even in radio mode zero sound
whhaaaattttt did i do wrong???