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???