Standard Relay Colour and Terminal Codes

The following colour and number codes govern our 12N relay wires and terminals. The colours and numbers are based on the familiar 12N colours in 7-core cable and the numbers in 12N sockets and plugs.

Relay terminal number

Relay Input wire

Relay Output wire

Relay Application

1

Yellow or Yellow/White

Yellow

LH Flasher

2

Blue

N/A

Fog Lamp

0V

White

White

Earth

4

Green or Green/White

Green

RH Flasher

5

Brown

N/A

LH Tail

6

Red

N/A

Brake Lamps

7

Black

N/A

RH Tail

+12V

Orange

N/A

Power to unit

C2

N/A

Pink

Monitors trailer indicators

The number 3 (earth on 7-pin or 13-pin socket) is not used on our relays.