http://www.mp3car.com

We have designed a Y-cable and extension cable for the Mac mini that allow you to keep your existing power button intact! The Y-cable goes in between your existing power button cable/connector and the motherboard. The other end of the Y-cable extends out of the Mac mini chassis and connects to the "power button extension cable" which connects to J2 on the P1900. This gives you a way to quickly/easily disconnect your Mac if you want to remove it from your car and take it inside!  This kit also includes a black momentary pushbutton making your installation even easier.  Please note: the button must be soldered on to the end of the y-cable extender. 

This cable does not work on mac minis that were made after march of 2009.  A cable for the 2009 mac minis is in the works, but we can not commit to a date until it goes into production.

Pushbutton Specs:
Dimensions:  12.5mm x 12.5mm
Contact rating:  20mA
Operating force: 120 ± 50gf
Travel: .7mm
Voltage rating: 50VDC

View a PDF of how to install this product here.