Get the colour version of the Wiring Diagram off the 907 documents link, from memory, in the "manuals" sub directory. Print it in colour and on A3 and its like looking at the bike!

Out of curiosity, does the tailight come on when the ignition switch is in the "Park" position? The Tailight is fed from 2 different fuses, depending on what position the switch is in. If it works in one and not the other, it might be a dodgy contact in the switch.

Cheers.

Nick.

The parking light is not working either. I have checked all the fuses including the 2 15A fuses in the left front behind the fairing. The ehadlight works on both high and low beam. Does the prking light control the tailight somehow? - Gene

The tail light and parking light are on the same circuit. The circuit is grey/yellow from the fusebox to the lighting switch which switches it through to a grey/black when the lights are on. This takes it to the ignition switch where it is routed to a Yellow/red to both the tail and parking lights. The ignition switch also connects the yellow/red to the blue from the fuse box when it is switched to the 'park' position.
First check the 15A fuse although that's unlikely to be at fault as you wouldn't have a headlight ether nor would the starter solenoid operate.
If the park/tail lights operate with the ignition switch in the 'park' position the fault is with the lighting switch or the wires to it. If not then it can only be the yellow/red wire form the ignition switch to the parking light, possibly a break or poor connection. The diagram shows the wire then continuing from the parking light to the tail light where it becomes a yellow wire at the tail light connector.