Andy131
Well travelled
- Location
- Manchester UK
A relay is just a switch that is operated by a coil, so there will be a low current (thin wire) live feed and low current earth (thin wire) this applies 12V to the coil that "throws" the switch.
The switch will have a high current (thick wire) live, and another thick wire that goes to the device that needs to be powered - fuel injection for example.
In an emergency you short out the two thick wires - causing the pump to run permanently.
Don't short the two thin wires as they are effectively live & earth = blown fuse.
For the fuel relay the thick wires are orange and brown according to the wiring diagram for my Euro 4 bike
The switch will have a high current (thick wire) live, and another thick wire that goes to the device that needs to be powered - fuel injection for example.
In an emergency you short out the two thick wires - causing the pump to run permanently.
Don't short the two thin wires as they are effectively live & earth = blown fuse.
For the fuel relay the thick wires are orange and brown according to the wiring diagram for my Euro 4 bike