ltcolselect

Fam42, sounds like you may have grounded more than the radio parking brake wire. When you grounded the parking brake wire from the radio it should be disconnected from the car parking brake wire. Installation guide says parking brake wire from the radio is spliced into the parking brake indicator on the car. For the bypass you simply ground the radio wire without splicing it to the parking brake. If you ground it and its still connected to the parking brake indicator for the car you will get a light all the time. So go back and check you are not connecting your grounded wires to the veh

Finished bypass. Special thanks to quickslip for posting about the Scion differences. I have a 2009 Scion XB and the head unit has no light green parking brake wire!!! Grounding the red/white wire on power harness (parking brake lead) and the mute wire like everybody else and the bypass works great. I also put a switch in the ground so I could keep the kids from watching movies on the way to school. Got a 12Volt switch at Radio Shack and wired both the brake and mute leads to one side of it and then ran a good ground to the other side of the switch. I could have hidden the switch be