DIY - Nav System Conversion

Some basic info: Both the NAV and Non-NAV have the same A/C settings; auto mode, temp range, blower speed, etc. The A/C Auto Amp is the brains of the A/C system in the 370Z and is differnt between NAV and Non-NAV model 370Zs. The other difference between the NAV and Non-NAV is how the controller for each system talks to the A/C Auto Amp. The Non-NAV has a direct connection vice the NAV talks to it via the CAN Bus.

Here is the wiring diagram for the Non-NAV system including where the NAV system would tie in:




Here are the pin outs for the two plugs/connectors you would need to work with.
On the diagram H.S. means harness (wire) side of the connector.

M67 is the connector going into the back of the Non-NAV Controller.
(you'll need to source this connector to complete this)


M66 is the connector going into the A/C Auto Amp.


You would need to wire:
Pin 5 of M67 to pin 6 of M66
Pin 4 of M67 to pin 7 of M66
Pin 1 of M67 to pin 20 of M66
Pin 6 of M67 to ground

Possible illumintaion wiring.
Pin 2 of M67 to pin 3 of M256
Pin 3 of M67 to pin 4 of M256

M256 is the hazard lights switch connector, pin out below.



Then swap out the A/C Auto Amp
From:
NAV A/C Auto Amp part # 27760-1EA1A
To:
Non-NAV A/C Auto Amp part # 27760-1EA0A


Enjoy!


If something is wrong let me know.
I hate putting out bad info.