Defi Oil Temperature Gauge Wiring

This is for future reference. The wiring is for a 2006 Nissan 350Z and the gauge has been connected to the unified meter and air conditioner amplifier (UM AC amp) located underneath the stereo head unit.

The gauge has 4 wires to be connected:

Orange - To 12V wire when ignition on
Red - To 12V battery wire
White - To 12V wire when small lamp (parkers) on
Black - To ground or negative battery terminal

The UM AC amp has 3 harnesses on the back. The following image shows the pin layout and the wires the gauge is connected to.

Orange gauge wire >>> Wire 46 (Blue/White)
Red gauge wire >>> Wire 21 (Red/White)
Black gauge wire >>> Wire 29 (Black)
The white gauge wire is not currently connected.