Type: analogue water/coolant temperature gauge
Range: 40-120°C (450-23 ohm)
Size: 52mm
Power: 12V or 24V
Waterproof rating: IP65
Works with: Wema temperature sensors
Face: black or white
Bezel: black or white plastic, or 316 stainless

The gauge has a 5-pin connector:

1. Blue — 12V negative (ground)
2. Red — 12V positive (fused, via the ignition or a separate switch)
3. Black — to the sender
4. Orange — red backlight
5. Yellow — amber backlight

Connect either the Orange or the Yellow wire for backlighting — the wire colour matches the backlight colour. The backlight is dimmable.

Fitting on 24V: either fit a voltage regulator (12V output) ahead of the gauge, or wire the supplied 150Ω dropping resistor in line with the 12V positive feed.

1. Cut a 52mm (2 1/16") diameter hole in the panel. You will need a minimum clearance of 55mm (2 3/16") behind the panel to fit the gauge. The panel can be 1–20mm thick.

2. Remove the fastening ring, insert the gauge through the panel from the front, then fit and tighten the fastening ring from the rear.

3. Connect the wiring as shown in the wiring diagram, selecting either the Orange or Yellow wire for your preferred backlight colour.

4. Securely connect the plug into the port at the back of the gauge.