Question about 2002 Harley Davidson FLHRCI Road King Classic

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Brake light straying on

I have an 2002 Harley Davidson Roadking. The brake light stays on when I ride, it does not stay on constantly (yet), but this is a safety issue. Also witht his problem I can not use my cruise control, proabaly due to the fact that the computer thinks my brakes are "on." I have not noticed any other proablems or noticed anything else not working other than my nuteral light is not working.

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  • erobinson287 Jan 07, 2009

    actually i tore it down, and foubd the switch was not making a ggod contact, so my buddy suggested that we put some nylon washer behinde it to act as a spacer. Sofar this has solved the problem. thanks for the help Rich!


  • capitolnick Jan 13, 2009

    Mine is doing the same thing, (04 RK). I did a lot of work on the bike and had to remove the entire control set up on the upper brake side. What is the story about the washer? I have read a bit about this and I may have the same problem, brake lights cruise.



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There is 2 switches on your bike (like most motorcycles) and one of them is stuck on, broken, or the linkage to it is damaged!

The Front switch is actually part of the master cylinder /lever, and the rear switch is actuated when the right side brake pedal is depressed.

You will need to take a multimeter and check them both for a short with no power on using an ohmmeter. Another way is to disconnect the plug going to the switches & check the brake lite to see if it goes off & if it does that particular switch is in trouble and may need to be replaced.

The neutral light issue is probably a blown lamp.

Good Luck!
Rich Lilja

Posted on Jan 05, 2009


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Hi, Anonymous appearances can be deceiving you must validate their integrity before diagnosing any brake light issue always check the bulb and fuse first for integrity a brake light staying on is usually caused by the front brake light switch, which is mechanical, not disengaging. On early models moving the throttle control housing closer to the front brake master cylinder is the main fix. On late models, the switch gets tweaked and needs to be realigned. A brake light that does not come on when the brake lever is applied can be caused by a faulty switch or no continuity in the wiring at the switch. The rear brake light switch is hydraulic and it is extremely rare to malfunction in a closed circuit condition causing the brake light to stay on. Usually, rear brake light switch issues are caused by no brake pedal free play or a sticky rear master cylinder piston. A brake light that does not come on when the rear brake pedal is depressed can be caused by a faulty switch, air contamination in the brake line, or no continuity in the wiring at the switch. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below and for more specific questions or answer please feel free, at no charge, to contact me at [] Good luck and have a nice day.
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