14-08-2021, 10:02 PM
The diagram shows the internals of the PLC switch. It is drawn in the sidelight/ tail light position with ignition off. The ignition switch is independent of the low/high/side/headlight part of the switch.
The key bit on the left opens and closes the connection between the battery (via the ammeter) and the IG connection on the switch which provides power to all the things that are controlled by the ignition key eg the coil.
The two arrows pointing down in the center part of the switch are connected together and control the connections between the F1, +D and F2. As drawn the schematic shows the switch terminals F1 and +D are linked - if you follow the wires connected to the PLC switch you can see that this means the D and F2 terminals on the dynamo are connected together.
The three arrows pointing down on the RHS of the switch are connected together and control the lights - T (sidelights, tail light) and H (headlights). The L terminal is not used. The A terminal is connected to the battery (via the ammeter) and the dynamo output via the cutout when the cutout is closed. As drawn the switch terminals T and A (which connects to the battery via the ammeter) are connected together so the sidelights and tail light(s) are on.
Hope this makes sense and I have not got my wires crossed. If you re-draw the contacts for the three other positions of the switch you will be able to see the connections in each case.
The key bit on the left opens and closes the connection between the battery (via the ammeter) and the IG connection on the switch which provides power to all the things that are controlled by the ignition key eg the coil.
The two arrows pointing down in the center part of the switch are connected together and control the connections between the F1, +D and F2. As drawn the schematic shows the switch terminals F1 and +D are linked - if you follow the wires connected to the PLC switch you can see that this means the D and F2 terminals on the dynamo are connected together.
The three arrows pointing down on the RHS of the switch are connected together and control the lights - T (sidelights, tail light) and H (headlights). The L terminal is not used. The A terminal is connected to the battery (via the ammeter) and the dynamo output via the cutout when the cutout is closed. As drawn the switch terminals T and A (which connects to the battery via the ammeter) are connected together so the sidelights and tail light(s) are on.
Hope this makes sense and I have not got my wires crossed. If you re-draw the contacts for the three other positions of the switch you will be able to see the connections in each case.