GSX-R 750 Pictures of how I fixed the sticky turn signal switch that wouldn't cancel on my 1985 1986 1987 Suzuki GSX-R750 motorcycle.

But first, lets pay some bills:

  1. There is the turn signal switch. I press the button to cancel the turn signal and the signal stays on. Since I do not have blue hair and am not going 45mph in the fast lane in a buick, this is a problem. I'll tear the turn signal button apart and see what's up.
    Turn Signal Switch

  2. Two (corroded) screws under the switch hold on the bottom cover on. One screw in front and one in back. Come to think of it, maybe there was only one screw holding it together. I think one was just lost. Another trip to the hardware store for me.
    Turn Signal Switch Cover

  3. Those two (or one) screws come out, and the switch assembly comes off the bars. Wires go from the bike to the bottom half of the assembly, then more wires hold the bottom and top halves together. The turn signal button and switch are under a large black plate.
    switch internals

  4. The screw that holds top and bottom halves together is on the right. The plate that covers the turn signal switch is top left, with the small screw that holds that on. The turn signal button is bottom center. I thought this was the switch. It is metal so I figured it did some conducting. It was pretty clean, so I was surprised it was sticking.
    of buttons and switches

  5. There is the bottom half of the turn signal assembly with the cover and button removed.
    turn signal assembly

  6. Two more screws remove this metal plate from the back of the assembly (bottom of pic). It looks like this is a cover for the horn button, and a skid plate and movement guide for the turn signal button. The electrical connections for the turn signal go to the plastic triangular piece at the top of the picture, or front of the switch assembly. This is the electrical switch and the part that is sticking.
    turn signal internals

  7. Now we have all the parts cleaned. From left to right, the button and the screw that holds the halves together. The black cover piece and one screw. The metal horn switch cover and the two screws that hold it. A small wire guide and screw at the top. And finally the plastic triangular turn signal switch and all the metal contacts that go with it.
    small switch parts

  8. There was a bit of goop and dirt that I cleaned out of the little switch pieces. See there is a tiny ball bearing and these little contacts. I added some dielectric grease to keep it slippery without interfering with conductivity or causeing shorts. By the way, these blue shop towels are awesome.
    dielectric grease

  9. I had to cut the zip tie and remove all the switches to get it to go back together. But I finally got it back together, and then a new zip tie to hold the wires together, and she is good to go.
    zip tie

  10. Then I put it all back together. No more embarassing bliker left on.
    no shame

  11. Next I sold out to make 02ยข so I can fulfill my lifelong dream of owning a 1986 944 with blown head gaskets.

    But no minivans!

  12. Then I finished my beer.

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Think: Cars are expensive, powerful, and heavy.   Before I start work, I face the possibility that I will destroy my vehicle, my own life, and innocent pedestrians' lives.   If anyone messes with a 4000 lb machine capable of 100 mph, these are real possibilities.   If I get in over my head, I call a professional mechanic.   The information on this website is provided only for entertainment purposes, and it is not intended as advice on how to service a vehicle.   For all you know I made this up.   Don`t believe everything you read on the internet.

Disclaimer: The technical information in these documents is provided without any warranty whatsoever and at no cost.   All information is in general terms and is not meant to apply to your particular situation, be current at the time you read it, or even be correct in the first place.   Improperly maintained vehicles can lead to serious injury, death, or unavoidable accidents. The author is not responsible for any errors on this site, and does not make any claim at all about the validity, safety, or veracity of the information contained on this website. Any work you choose to do or not to do on your vehicle is done at your own risk. The information on this site is not intended to serve as a replacement for professional advice, professional workmanship, dealer service, union labor, or psychological counseling.   The author disclaims any and all liability directly or indirectly arising from the application or use of any information or idea contained on this or any other web site.   By opening this page, you agree to never sue anyone ever or allow anyone to be sued on your behalf.   The appropriate professional should be consulted regarding your specific condition. does not take responsibility for the information posted on other sites to which it links.

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Last modified: 11/25/2014