12 S Socket to 1998 pin allocation
1..YELLOW Reversing Lights
2,..BLUE.....Caravan Battery/charger
3...WHITE.....Earth
4...GREEN....Permanent 12v supply
5...BROWN...Sensing Device
6...RED....Refrigerator
7...BLACK....Spare
12 S Socket after 1998 pin allocation
1,,YELLOW.....Reverse Lamps
2..BLUE......Spare
3..WHITE......Earth for Pin 4
4..GREEN .Permanent 12v power/ charge
5..BROWN....Spare
6..RED.....Fridge
7..BLACK.....Earth for Pin 6
12N Pin Allocation
1.YELLOW....Left Indicator
2.BLUE.....Fog Lamps (if fitted)
3.WHITE.....Earth
4.GREEN.....Right Indicator
5.BROWN...Right Side/Taillamp
6.RED.......Brake Lights
7.BLACK....Left Side/Taillamp
Hope this helps