Can someone please post a pic of how they grounded the wires?
From what I take...
Avic-D3 obviously has a black 'ground' wire. I can solder the e-brake and mute wires to this black ground, and hook it up to the black (chassis?) wire coming from my car/harness?
If this is the case, I guess I have to solder the mute/e-brake wire low enough on the Avic ground wire, to have enough wire to splice to the car's ground wire?