I installed a stereo and i need to tap into the positive wire of the parking brake switch, problem is that i see only one wire coming from it, do i tap the green parking brake wire into that? If not then how do i wire it to show video and stuff with the parking brakes on? Thanks

 

For the 02 SC430 wiring diagram one side of the parking brake switch is grounded and the only wire connecting to the switch for the parking brake is a red/ black wire. The basic after market radio diagram used to detect on ON/OFF status for the parking brake is the green or light green wire which should be bonded to the red/black wire. I hope this helps.

 

Thank you! I thought that might've been it, but didn't want to risk it, well now I know what I'm doing tomorrow lol