Is a relay necessary for fog lights?
Relays are an important component in wiring fog or driving lights with a 30-60A draw. Basically, the relay protects the switch from getting hot and creating unwanted resistance. The low current through the switch triggers the relay to make a higher current connection to the heavy load of the fog lights.
Do fog lights need a switch?
“You MUST NOT use front or rear fog lights unless visibility is seriously reduced (see Rule 226) as they dazzle other road users and can obscure your brake lights. You MUST switch them off when visibility improves.”
How do you wire a fog light relay?
Connect a green wire from the “acc” terminal on the back of the switch to the number “86” terminal on the relay. The last terminal on the switch connects to the power source. This white wire will need a 10 amp inline fuse and is connected to the fuse block. The relay is wired next.
How are the fog lights connected to the ground?
This terminal will carry power to the fog lights. The fog lights each have two wires, one for ground and one for the 12V power. One of these wires from each fog light has already been connected to ground. A three-way connection must be made joining the second wire from each of the fog lights to the red wire going to the relay terminal “87.”
How do you wire fog lights on a Moss Motor?
Locate a suitable body connection point and drill a 7/64-inch hole in the body. Crimp an “eyelet” connector on the ground wire and screw a sheet metal screw through the “eyelet” and into the body. This must be done for the switch, the relay and each of the fog-lights. The relay ground terminal is numbered “85”.
What kind of Fuse do you need for a fog light?
Splice a red wire from the headlight wire to the relay terminal “30.” This line needs a 10-amp inline fuse, so be sure and wire one in. The final terminal on the relay is numbered “87.” This terminal will carry power to the fog lights. The fog lights each have two wires, one for ground and one for the 12V power.