Hey guys, I just got my 110BT in the mail yesterday and jumped right into doing this install. I successfully got the mute pin out of the harness and relocated. I gave it a good 30 minutes with the jewelers tools then decided to cut it out. I just cut a slit in the top of the harness and pulled it right out no problem, very minimal damage to the harness.
Anyways... I'm soldering and heat shrinking all the wires and wanted to make sure of one thing first. Can I connect the newly relocated mute wire (yellow), the parking brake wire (green), and the ground for the radio (black) directly to the vehicle wiring harness' ground in lieu of grounding it directly to the frame? Is that too many things connected to one ground? Would that compromise the effectiveness of the ground for the radio?