Mod Confirmed to work on a NAV equipped FX. I did it to mine yesterday and works perfectly. I figured out 2 ways to do this mod. Ill post and explain both and let you guys choose which one to do.
The two colored wires you are looking for are:
PINK - VSS (speed sensor) Cut and run a ON/OFF switch between.
PURPLE - Ground, Ground this wire the way it was explained on Page 1 for the NON-NAV units.
FIRST WAY: This is the normal way where only the NAV and A/V units are affected. This will allow you to input destinations while moving and also allow video to be displayed while moving (gotta ground the purple also for the video to work).
This is how the back of the NAV unit looks. The plug that we have to work with is squared off in red.
Here is a close up of the plug with the wires you will have to work with. The one i squared off in red is the VSS wire that you have to cut and run a switch between. The purple wire is squared off in black, just ground this wire as stated earlier in the post.
thats it! you are done
SECOND WAY: If you choose to go this route you will still have to ground the purple wire that is squared off in black above. But instead of working with the VSS wire shown above, we will be working with a different VSS wire. This second method, if you choose to go this route, will allow you to work with the NAV, watch DVD, look at the 360/Front view cameras, and more.
Like i said before, ground the purple wire mentioned in the FIRST way. For the VSS wire we will be working with this harness.
Now, there is only ONE pink wire in this bunch. That is the VSS wire that you will put on a switch.
Hope this helps.
Elmo
