Since AVic-D3 comes without bracket or cage what dash kit do I use to help mount the Unit to the car? Also the trim plate that came with the D3 is actually too big for the unit I need a trim piece.

try this: http://www.pioneerelectronics.com/pna/v ... 17,00.html

It is basically a cage and trim ring. This will work well if you have a double din opening that requires a cage mount, like in some late model VW's

Install the unit with self made brackets. Not very impressed with my metal strap bracket. I will probably order that ADT-VA133 install kit to see if it will works out better.

Good part is that I got the metra harness and wired everything on the bench and just plug and play. everything works even the bypass.

Factory Pinout is very available thru the W163 ML community.