From George Smart's Wiki
Before the Mobile Car Station replaced the Yaesu FT-7900E into the car, I had the Yaesu FT-7900 and FoxDelta FoxTrak in one of the side storage areas of the boot, and the GPS inside the cars paneling. The FoxTrak is connected via the FT-7900's DATA socket, and is controllable via the FT-7900's front panel. All of the electronics and radio are secure in the boot and no loose cabling can be seen. The radio is also used for accessing my EchoLink node as well as general receiving when I am not using APRS.
The main hardware is mounted in a side compartment in the boot of the car. This contains the radio, the tracker and a few manual controls too. The radio front panel is installed in the front cabin with the microphone with an external speaker.
The thumbnails below are of the page are images of the installation.
Click to enlarge