Hi everyone i just got a z1 and iam doing the bypass it's april 06 and i just needed to know if i can connect the light green wire with the yellow wire (cellular mute ) which i used to do the bypass and connect them to the black ground wire or do i have to ground these wires to the chassis on the car thank you.

Both bypass wires can attach to the black wire as long as the black wire is also going to the vehicle ground.

Thanks alot