Is there a working parking brake override yet for the AppRadio 2?

we used this switch on my brothers appradio 2 and it works great. http://www.radioshack.com/product/index.jsp?productId=3159591

connect parking wire to 1 and ground to 2 and thats it. do not connect to + or - thats if u want the button to light up.

So there is, but it requires a switch? Does it have to be a momentary switch? If I have to use a switch, I'd like to use this one:

http://www.frozencpu.com/products/8738/ele-394/White_Illuminated_Bulgin_Style_Latching_Vandal_Switch_-_16mm_-_Silver_Housing_-_Ring_Illumination.html?tl=g44c343

How does it work? Once turn on accessory power in the car, you simply push the switch and it overrides the parking brake requirement? What happens if the switch is pushed again while the car is on?

Why don't you actually try looking over some of the other threads about the unit? Bypass info is all over this forum.