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Hi Guys,

I replaced the bulb and the conditions are unchanged.

Measuring voltage from battery terminals to wires in rear light fixture. Battery voltage 11.26v (Turning headlight on turns on brake light. And applying the brakes turns on the rear/running light. 1)Key in, headlight off, no brakes: From negative battery terminal to Grey/black 7.6mv Green/red 7.6mv ...

I also incorrectly described the colors of the 4 blue wires connected to the block to the left of the bulb socket. One pair is blue/red stripe and the other pair is blue/black stripe.

I noticed one more detail: When the headlight is turned on the brake light comes on. At the same time, the brake lever and brake pedal action turns the rear/running light on/off. So, both filaments are lighting at the same time. And I can also add to the recent history: The bike was stored outside w...

I didn’t notice the problem with the brake lights until the day after it came back from service for the second time. I returned the bike initially after service because the cable routing was tight after the bar change.

I wish I could send a photo, Rob. The rear light cluster has a clean, corrosion free, socket base, bulb, and connections. Both filaments are intact. No obvious tool marks or fresh scratching on the clipped wire connectors. The socket has one grey/black (left side) and one green/red wires, each solde...

About “the rear light as opposed to the brake light”, when the nail key is swung to the headlight or parking position, the brake light is on. It’s bright. When the nail key is in but straight, both the brake lever and pedal, when pressed, turn on the running light. Noticeably dimmer.

Ty Rob,

I’ll start there.

Hi folks, I’m trying to understand and fix an electrical problem. My ‘72 r60/5 seems to have working switches and lights but... When the headlights are turned on the brake light turns on. It stays bright and unchanged even if the brake lever or pedal is pressed. When the key is in, but the headlight...