Rear brake light problem on my 1982 S model

[DavidL]

I finally found some time to put the new parts on it and started it today. It sounds nice. All the electrics work ok appart from the rear brake light. I have looked high and low for a rear brake light switch and cannot for the life of me find one. I also found these two wires (in the same area behind the right side panel but unconnected) but I don;t think they are related to the rear brake light switch. Any pointers would be appreciated. Thanks, David

 

[DavidL]

I've just worked it out.

 

[Paul Sutton]

If those are the rear brake light wires, and I believe they are, then a continuity test will show that one of these wires runs to the brake tail light and also back to the front brake switch. If you wipe the wires clean with white spirits you should see their colours and be able to match them to your wiring diagram.

If your bike has a battery fitted then shorting both wires with a 12V bulb will give a dim glow because it will be in series with the tail light, or place the voltmeter black probe on the chassis and touching each wire one at a time with red will show 12 - 13V when you find the power wire to the switch - it should be the female bullet connector.

 

[XSLeo]

You Worked it out, good, what was the issue. If you tells us, another person that has this issue, your fix may be what they need.
Leo