Headunit Wiring Diagram
Find every pin, plug and wire colour for the PVS 9 inch MK4 headunit in the Toyota 70 Series LandCruiser and the 12.1 inch Pro Snapdragon headunit in the Nissan Y61 GU Patrol. Both units share the same board and the same plug on the back. You get two views of the same diagram, one drawn in wire colours and one anchored on the board pin numbers. The 16 pin main plug follows the ISO and DIN aftermarket standard, so you get the power and speaker colours Kenwood, Pioneer, Alpine and Sony all use.
The diagram scrolls sideways on your phone.
Reading the Diagram
This diagram covers the PVS 9 inch MK4 headunit for the Toyota 70 Series LandCruiser and the 12.1 inch Pro Snapdragon headunit for the Nissan Y61 GU Patrol. Both run the same board with the same plug on the back, so every pin and wire colour here is the same on either unit.
The left column is the connector and its pin. The right column is where that pin goes, drawn as the connector you actually hold at the far end. Every connector you'll handle on this loom is female. An RCA lead is black jacketed and only the plug is coloured, so those runs draw black with a coloured plug on the end.
On an aftermarket camera, the small red wire off the yellow RCA plug goes to this pink REVERSE wire, and the camera itself is powered from the reversing light at the back. With a factory Toyota camera there's no trigger wire to connect, because reverse already arrives on Connector 3. The pink wire on Harness F (F7, labelled REAR-VIEW) is AUX / front camera 12V power out: never use it for the reverse trigger or a reverse camera.
You keep the factory clock spring. On a GU Patrol, these two wires go to the two steering wheel button wires at pins 17 and 19 of the factory radio plug, then you learn the buttons in the headunit's steering wheel settings.
