Land Cruiser 100 Console Design

I've made some progress on the Land Cruiser setup and thought I'd share some of the lessons learned.

Console Requirements:

• Garmin compatible navigation system (Want the same maps on my handheld and computer)
• Bluetooth for audio and telephone
• Universal Serial Bus for charging
• Tire Pressure Monitoring System (TPMS)
• Citizens' Band (CB) Radio
• Family Radio Service (FRS)/General Mobile Radio Service (GMRS) Radio

In researching what others have done to accomplish the above requirement I came across countless configurations looking like the ones below.

While imposing as they might seem, I had something a little more subtle in mind.  Further research identified a few double DIN head units which supported importing Garmin topology maps.  Looking into TPMS options I found several units which supported video output to a receiver.  As with all things, you could spend as much or as little as you liked.  Since I am always pushing the boundaries of the budget I planned to install a vast majority of the equipment myself.  The following Do It Yourself (DIY) links proved to be very helpful:

• Radio Removal Toyota Land Cruiser (1994-2004)
• How to Install a GPS Navigation Antenna (Car Stereo Accessory)
• How to Install a Bluetooth Microphone
• Stereo Wiring: Land Cruiser / LX 460 (1998-02)
• Take Control of Your Power Antenna
• Replacing Your Audio System: Overview

Wanted:

• Kenwood DNX Receiver
• TYREDOG Tire Pressure Monitoring System (TPMS)

Tyredog seemed to be the rockstar when it comes to TPMS, but didn't have an option to feed into an receiver.  Picked the Kenwood DNX series since there was a lot of talk of using them on 4x4 forums.

Procured the following thus far:

• Metra 40-UV43 Male to Female Motorola Antenna Cable
• Scosche Mda-B Micro/Delco Antenna Adapter Tip
• ASA Electronics JENAUX USB/Aux Audio Input Jack
• USB 2.0 - Mini-USB to USB Cable (8 Feet)
• Steelmate TP-05 Tire Pressure Monitoring System (TPMS)
• Kenwood DNX8120 Receiver (Used off of ebay)
• Wire Harness (Adapter between the receiver and Land Cruiser)

Lessons Learned:

• When replacing the OEM stereo your antenna control button no longer works.  There is an article above on how to make a custom switch to control the antenna.  Currently I'm trying to find a 4 inch(ish) stubby antenna which will do the trick instead of adding another switch to the console/dash.
• (Updated 04/2015): I'm getting current feedback, working to implement the fix identified above (Stereo Wiring: Land Cruiser / LX 460 (1998-02) or install a amp.  Installing a "group loop isolator" had little or no effect on current feedback on the audio output.
• SD Card slot in the Kenwood DNX is for upgrading only, it will not read GPS maps, mp3s, etc,
• The rear Mini-USB jack does allow you to upload maps. However, you seem to only be able to add/remove one map selection.   
• the normal USB connectors read mp3s automagically. 
• (Added 04/2015): The DNX 8120 uses the nuvi Trip Planner architecture which does not support the importing of save Routes from BaseCamp (big deal).  Garmin suggests that mapsource may work, I have yet to try this out.
• (Added 04/2015): The DNX 8120 Garmin recommends NOT to load extras - Voice Files, Vehicle Icons from the Garmin Garage, etc. - as these files can cause instability within the mapping software.