Wiring Bug

When I bought my first RD400, I had to rebuild the wiring diagram. I noticed that there was an error on the wiring diagram (and it's included on all diagrams I found) with the lights.

When you take a look at the ignition switch, there are three wires coming from the fuse box. (Brown, red and red/yellow) When you put the ignition switch into position 1, it should only connect the power supply to let the engine run. (from the battery to the ignition switch and fuse box (red wire))

Why else there are 4 positions on the switch....

When you put the ignition switch into position 2, the engine should run and the lights must go on. (the blue and blue/red wires) From the ignition switch, there goes a blue wire to the lighting switch to turn the lights on and off. From the fuse box, there goes a red/yellow wire also to the lighting switch and to the pass switch. So far so good....

The problem in the diagram is, that the red/yellow wire from the fuse box to the lighting switch should not be connected. When you look to the connection inside the lighting switch, the blue, red/yellow and blue/black wires are connected together. The blue wire should turn (when lighting switch is set to on) the lights on when the ignition switch is set to position 2. BUT the red/yellow wire is coming straight from the fuse box which is active in position 1 of the ignition switch and the lights go on in this position.

When you do not connect the red/yellow to the lighting switch but only to the pass switch, the lights only go on in position 2. There is only one problem, the fuse for the lights doesn't have any function. (but there is always a main fuse) It can be resolved by connection 2 extra fuses between the blue and blue/red wire at the ignition switch.

What I don't understand is why there is a red/yellow wire is coming from the lighting switch. Is it a mistake, or am I wrong??

If you have some comment or suggestions, please e-mail me at postmaster@rd400.nl