Never done a nav unit and from reading i have a pretty good idea on it, few questions though.....
I have some wires i NEVER had to hook up before so idk how to go about all this.
1)Vehicle speed pulse signal wire
2)Reverse signal wire.
Idk if i NEED these hooked up for the unit to function or if they can be left out.
Also anything special with the parking brake bypass (like pioneer and most newer ones that need a relay or something) or is it old school and jut ground it.