The fog light relay allows heavy amp loads to be controlled by a small dash
mounted switch. (refer to figure 4 fog light relay - partial schematic for details)
The dash mounted fog light switch applies power to the coil of the fog light relay,
closing it's contacts. This allows power to from P14 through fuse F13 Troubleshooting Fog Lights
It is assumed that the chassis battery disconnect is engaged, the ignition switch
is on, the fog light switch is on, and the headlight switch is on low beam.
If battery voltage is present on P4 #9, check the fog light vehicle wiring and
If no voltage is present on P4 #12, check wiring to the dash mounted fog light
If battery voltage is present on P4 #12 and fuse F13 is good, replace the circuit
Excerpt from BCC literature pm me and I can send you a pdf of what I have
Morris & Lena
2001.5 Fleetwood Discovery CAT 3126, 2006 Dodge Dakota 4x4, Arctic Cat TRV, lots of prospecting gear.