Hey Lex, I tried to PM you but I don't think PM or email works on this forum? Anyway, there are a small handful of us that are doing something similar to you... We should get in touch and collaborate...
Sounds like a good idea. I just picked up the parts needed for both the front camera and NAV bypass. I may get to it this weekend... Do you need the EWD's? I have ALL of them...
We'll talk... Thanks!
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Hey guys,
I was able to accomplish my main goal (just not the way I truly wanted to). Since the NAV incorporates the input blocking feature within its code, bypassing the VSS into the LCD/Radio unit and re-routing it to the NAV through relays will not work (same as hardwire posts). Furthermore, bypassing the VSS altogether stops the NAV from working (as you would expect). If you are really computer savvy, there is a way to make it work if you have an older version of NAV software (pre-6.1). I didn’t have the time to mess with that so here is my solution.
Navigation Overide for '06/'07 (Version 6.1)
By using relays and a switch, the bottom line we all want to get to is reachable. Simply install a relay block that works off of a switch that will (when activated) send a ground to the LCD side of the Parking Break wire and interrupt the main VSS input. Long story short, when the switch is on, you can operate ALL functions of the NAV, Phone and Audio system including input while driving. When done, flip the switch back and it only takes seconds for the system to sync up (it's almost seamless). The only issue you may have is that at high speeds (freeway) you may have to flip the switch off-then-on once or twice as the GPS portion gets LAT and LON Pings every minute or so and inhibits the input (not a big deal). I can post instructions if needed.
Keep in mind this could be done much simpler but the way I've done it reverts the system back to a 100% factory configuration when the switch is off. Furthermore, it's driven via Ignition so it's impossible to accidentally leave the switch on and run down the battery.
With regard to accessing the factory menu, I was able to get into a secret menu (using the hold/P-Light 3-flash technique) but as stated in other posts, the override is not there or hidden deeper. Until the answer comes out, the solution I have explained works well. But, I caution you...there is a reason why they have went to great lengths to stop people from input while driving. As more accidents happen (and they will), input while driving may and probably will become illegal. If you do this, be smart about it and BE CAREFUL !!!!!!!
Front Cam is next...
Take care,
;)