2003 chevy silverado, alpine ine s920hd

Aside from normal power & speaker wiring, do the following connections appear correct:
-Speed Sensor (grn/wht to vehicle speed signal (Dk grn/white at I/P relay block)
- Parking Brake (yellow/blue)- does not appear to be vehicle parking brake signal
-For an Idatalink Maestro steering wheel control interface does SWI-1 (PURPLE / red, connector A1, pin 1) connect to vehicle remote radio control signal (lt grn, A7 @ BCM, C3 connector), or to vehicle datalink connection to radio (orange A1,C1, lt grey connector)?

Sounds about right but I never worked with the Maestro interfaces. You shouldn't really need that speed sense wire sir. You may only notice a slight difference in how well the system can track and triangulate with or without it.

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there can be only one.......

The only time it uses the speed sense is if it loses signal from the satellites, such as in a parking garage or a tunnel.

That is true but the VSS should be easily accessible behind the instrument cluster. GREEN / WHITE. Pretty sure it is the only GREEN / WHITE back there. That is for 03-07 silverados

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To master and control electricity is perfection. *evil laugh*

if you want to get into the advanced menus and watch videos you will need parking brake and foot brake hooked up. you can also use a timed relay to do the sequence on them.