2016 Bonneville T100 - Removal Of Nagging Interlock Switches

Discussion in 'Technical Help' started by MoreCowbell, Feb 7, 2025.

  1. MoreCowbell

    MoreCowbell Member

    Apr 24, 2021
    17
    8
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    This topic may well have been covered in other posts on this forum but maybe not as completely as in this post.

    Rationale:
    No rider but a complete moron would not know to always have the bike in neutral in order to start the engine, and no rider but a complete moron would ride off with the kickstand down. There, I said it. 20 years ago, and long before – motorcycles didn’t have these show-stopping features. So why did Triumph begin installing them, whenever that was? To those with real discernment, the features are much less about real rider safety, and are much more CYA devices advised by Triumph corporate attorneys in case there’s a serious accident. There, I said it. In this forum and others, there are anecdotal reports of such “safety” switches failing, leaving the rider stranded in the middle of nowhere. Who needs that?

    Mysterious impediments to successful starting are reported on several threads, notably this one initiated by me:
    https://www.thetriumphforum.com/threads/starting-dilemma-tied-to-the-starter-solenoid.43168/

    Given this perennial issue with the Bonneville, the last thing a rider needs are additional interfering impediments. Okay … end of sermon …


    Clutch interlock switch
    This switch uses is a spring-loaded plunger and is mounted in the aluminum clutch lever bracket. Unfortunately, the deficient 556-page Triumph service manual says nothing about this switch not how to remove it (say, in case it fails). You will have to take a small screw driver and perhaps another small tool and coax it out of the bracket, essentially destroying the switch. Once it’s out, further break up the plastic switch body to yield 2 thin copper leaves (see Pic 1). Clamp these together with an alligator clip and carefully solder them together, thus closing the circuit (Pic 2). At this point, you can simply tape the soldered pair to an adjacent wire. I made a “sock” out of a short piece of plastic tubing, fitted the “sock” over the exposed work, and taped it up tidy.

    Kickstand interlock switch
    To disable this switch, you don’t really need to remove the switch itself but I chose to. This one’s more work than the clutch switch and again, nothing in the deficient 556-page Triumph service manual makes a whisper about how to remove it (say, in case it fails). This switch also uses a spring-loaded plunger and is mounted on a steel plate behind the kickstand mount (near the oil filter). It is fastened to the plate with two 6mm screws with Torx (T30) heads. Unfortunately, those screw heads are virtually inaccessible and the area above them is tiny and dark, making their removal virtually impossible.
    Before I describe how I removed the switch, let me say this: As a machinist, it boggles my mind that Triumph/Hinkley didn’t simply tack weld two 6mm nuts on the TOP of the plate so that the switch body could be fastened from the BOTTOM - so that an average person could easily effect a removal.
    1. Put the Bonneville up on jack stands (I made a special bar - 1¼” tubing - that fastens to the center stand mounts. Once the bar is attached, I hoist up the bike from the rear loop behind the seat and set it onto the jack stands.)
    2. Using a sharp 15/64” drill bit (or 6mm if you're metric), drill out the screw from the bottom (they’re not hardened) – one at a time. A lot of press force and cutting oil is required! You’ll probably destroy much of the aluminum switch body but it’ll eventually fall off.
    3. Pull the switch up to the area behind the left-side cover (see pic). Disconnect the terminal block and clip the 2 small-gauge (~22ga) wires from that block (one is black; the other black/red).
    4. Carefully strip the 2 wires back ~⅝” and twist them together.
    5. As with the 2 wires going to the clutch switch, carefully solder these 2 wires together. Tape up the exposed parts and fold next to an adjacent wire; tape this all together.

    More than you wanted to know (but not in the service manual): of the 3 wires coming from the kickstand switch to the terminal block:

    • When the kickstand is DOWN: Switch is open (BLK & BRN have continuity.
    • When the kickstand is UP: Switch is closed (BLK & GRN have continuity.

    Pic 1.jpg

    Pic 2.jpg

    Under my LH cover.jpg
     
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  2. Pegscraper

    Pegscraper Elite Member

    Jun 12, 2020
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    #2 Pegscraper, Feb 7, 2025
    Last edited: Feb 8, 2025 at 10:00 PM
    Only a moron would...etc...etc...
    You missed out the word "intentionally".
    There's one born every minute of course but such "failsafe" devices also protect against an occasional lapse in memory for whatever reason.
    I can't remember the last time I did it (engage 1st with the sidestand still down) but I have done it. The only person who doesn't make a mistake is the person who doesn't do anything.
    I'm not saying they are absolutely necessary but they will have saved someone somewhere some grief.
    I bought a new RX1000 in 1986 which had an intermittent misfire which was eventually traced to the sidestand switch so they have been around a while.

    In these times of liability litigation, lawsuits and compensation claims, I agree, it's now probably more to do with manufacturers covering their own arses.
     
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  3. doov29

    doov29 Well-Known Member

    May 30, 2020
    117
    83
    Aberdeen
    Colour me moron!
    :rolleyes:
     
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  4. Helmut Visor

    Helmut Visor Only dead fish go with the flow
    Subscriber

    Oct 3, 2018
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    While your information may be helpful to those who wish to bypass these systems I'm afraid your rationale just shows you as either that elusive perfect human being :rolleyes: or so arrogant that you never admit to making mistakes, and to say that anyone who does make them is a moron shows more about you than them : unamused:
     
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  5. Adie P

    Adie P Crème de la Crème

    Jul 7, 2018
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    "No rider but a complete moron would not know to always have the bike in neutral in order to start the engine, and no rider but a complete moron would ride off with the kickstand down. There, I said it. 20 years ago, and long before – motorcycles didn’t have these show-stopping features. So why did Triumph begin installing them, whenever that was?"

    You omitted to mention that much of this "safety first" stuff was incorporated into motorcycle design and construction, either directly or indirectly, as a result of safety legislation that was enforced on the manufacturers by the likes of Ralph NADER et al.

    SO ....... perhaps the underlying reason is because there are lots of complete morons in the US - traditionally THE largest single market for any vehicle manufacturer?

    I also think you'll find that most of the 'safety' features you mention have been in use on Japanese built motorcycles for at least as long, probably longer, than they have on Triumphs (Hinckley started manufacturing for sale in late 1991) so naming and shaming Triumph for this 'trend' is a little bit ironic to say the least!

    And in case you're in ANY doubt - I spent a year wandering around the US on a motorcycle (just because I could) and have many very good, close American friends, so I'm not in any way US-phobic and I'm definitely NOT aiming a slight at either you or the very useful advice and guidance you've provided in your piece. I just think your perspective might be somewhat narrowly focused on this.;)
     
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  6. MightyBoosh

    MightyBoosh Active Member

    Mar 29, 2023
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    Blimey, all pile in :grinning: although to be fair

    SO ....... perhaps the underlying reason is because there are lots of complete morons in the US


    They did elect Emperor Chump not once, but twice. Or thrice, if he is to be believed.. .:p
     
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  7. MoreCowbell

    MoreCowbell Member

    Apr 24, 2021
    17
    8
    New Mexico
    #7 MoreCowbell, Feb 10, 2025 at 6:59 PM
    Last edited: Feb 10, 2025 at 8:33 PM
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  8. Pegscraper

    Pegscraper Elite Member

    Jun 12, 2020
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    I reckon I'll stick with it. The only bike I have ever had a SSW issue with is the one I mentioned in post #2. I'm not aware of any of my biking friends having issues either so I wonder just how common the issue is.
    If I'd had your experience and been let down with a non starting bike I might think differently but I haven't so I don't.

    If this post puts the kibosh on my new Scrambler and it develops an illusive non start problem I will come back to this thread and remove it.:joy:
     
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  9. Baza

    Baza Elite Member

    Jul 25, 2020
    3,635
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    Amazing Grace
    When I bought my Ducati in 01 you had to start it with the prop stand up irrespective of it being in gear or in neutral which was a total pain. With a connection from the gearbox neutral switch to the prop stand switch with an inline diode I can now start it on the prop stand, but only in neutral.

    I find it totally incomprehensible for anyone to deliberately remove these safety interlocks when they are working as they should. They say you can make every effort to ensure something is idiot proof, which is what Triumph have done, but you can’t make it bloody idiot proof.

    if a bike modified in this way were to be sold on to another party without notifying them of these modifications and the implications of having done so there could well be some legal ramifications arising.
     
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  10. Pegscraper

    Pegscraper Elite Member

    Jun 12, 2020
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    Good point, especially across the pond where lawsuits are thrown around like confetti.
     
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