Hey Guys,
I'm planning on pulling out the stock RDS CD/radio head unit in my '04 LS and installing the Pioneer Z2 I pulled out of my older truck. I want to use the speed sensor wire option available on the Z unit, but am not sure where the speed sensor wire is on my '04 or what the wire looks like. Also, I've read everything I can find on the subject here, but really didn't find an answer to my next question. Besides a wiring harness adaptor, do I need anything extra to retain the RAP option in my truck?
Any help is greatly appreciated.

 

I believe the orange wire is the speed sensor wire. I have an 03 and installed an aftermarket radio as well but didn't end up wiring it in.