It took me a couple of months to wrap up all the loose ends, but here is a 2009 Toyota Corolla radio & scanner install:
Larsen trunk lip mount NMO150/450/800 tri-band mobile antennas
Uniden BCD-996XT Trunktracker III scanner
Garmin GPS18PC GPS receiver
Kenwood TM-V71A dual-band ham radio transceiver
Kenwood KDC-HD545U stereo w/ HD radio tuner & USB/Ipod interface
Crutchfield: supplied double iso in-dash mount & wiring harness adapter
pic1
Larsen trunk lip mount antennas
pic2
Driver's seat pulled forward to reveal Kenwood transceiver drawer unit mounted underneath with two external speakers
pic3
Dash vent assembly removed showing Garmin GPS receiver puck before being secured with double-sided tape & velcro straps wrapped around vent
pic4
Another view of Garmin GPS hidden beneath top of vent assembly during installation with dash trim removed
pic5
View of completed install
Larsen trunk lip mount NMO150/450/800 tri-band mobile antennas
Uniden BCD-996XT Trunktracker III scanner
Garmin GPS18PC GPS receiver
Kenwood TM-V71A dual-band ham radio transceiver
Kenwood KDC-HD545U stereo w/ HD radio tuner & USB/Ipod interface
Crutchfield: supplied double iso in-dash mount & wiring harness adapter
pic1
Larsen trunk lip mount antennas
pic2
Driver's seat pulled forward to reveal Kenwood transceiver drawer unit mounted underneath with two external speakers
pic3
Dash vent assembly removed showing Garmin GPS receiver puck before being secured with double-sided tape & velcro straps wrapped around vent
pic4
Another view of Garmin GPS hidden beneath top of vent assembly during installation with dash trim removed
pic5
View of completed install