Usa 2020 Triumph Bonneville T120 Cruise Control Installation, Which Model?

Discussion in 'Technical Help' started by StephenZ, May 23, 2025.

  1. StephenZ

    StephenZ New Member

    May 23, 2025
    0
    1
    Raleigh, NC
    Hi all, I am looking to add cruise control to my 2020 bonneville T120 which had the heated grip already. I thought this would be a simple task but searching online here in the US all the cruise control listings are for T100 models. I cant find one specific to T120. Are these the same? Which one should I get for my model in the USA? I read there are some confusion about DRL on these grips as well.

    cheers
     
  2. RevPaul

    RevPaul Senior Member

    Apr 21, 2020
    802
    243
    Cheshire, UK
    #2 RevPaul, May 23, 2025
    Last edited: May 24, 2025
    Hi @StephenZ I might be able to help, I was researching the possibility of fitting Cruise Control to my Street Cup (based on T100) and downloaded Triumph's instructions, which lists different accessory part numbers for T100 and T120. The part numbers are based on the last 6 digits of the VIN Number (the number stamped into the headstock). And also seems to depend on whether you have a Euro 4 or 5 engine (are there 2 or three plugs on the ECM? (the large black box under the seat, above and behind the battery)) and does your bike have DRL?

    If you can let me know the above, I'll let you know if a part number exists on the instructions I have.

    Cheers:cool:
     
  3. 243jimb

    243jimb Member

    Nov 27, 2018
    11
    8
    Canada
    Like this you mean? upload_2025-5-26_9-36-27.png
    Canadian pricing.
     
  4. RevPaul

    RevPaul Senior Member

    Apr 21, 2020
    802
    243
    Cheshire, UK
    #4 RevPaul, Jun 4, 2025 at 11:13 PM
    Last edited: Jun 4, 2025 at 11:53 PM
    Hi @StephenZ

    This comes with the caveat that I'm in the UK, but on the Triumph Instructions website you only get an English option.

    Based on what you’ve told me, you have two choices depending on whether you have DRL on your bike or not. Heated grips aren't going to make a difference as far as I can tell and I'd be surprised if they did.

    The Triumph accessory part numbers are
    A9638178 for a T120 without DRL. And
    A9638179 for a T120 with DRL.

    In both kits you'll get a complete left hand clutch and switch gear assembly and the front half of the right hand controls (i.e. master cylinder and brake lever). The difference in part numbers probably reflects the different connectors needed.

    You can verify this by going to the Triumph Instructions website yourself, its Triumph Instructions.com and entering either of the above part numbers.

    Next step after identifying which kit you need, double check with the parts department of your local Triumph dealer.

    Enjoy your ride:cool:
     
  5. Kinjane

    Kinjane Well-Known Member

    Oct 15, 2017
    255
    63
    Bristol, Land of Enger
    The ECU needs an update for the cruise control, otherwise all you end up with is an additional (non functioning) button on the switchgear.
    It's possible to purchase the switchgear, mount it and and connect everything up to reduce labour charges should you wish, then take it in to the dealers for an ECU update or use TuneEcu to update the ECU with the correct map yourself.
     
    • Agree Agree x 1
  6. RevPaul

    RevPaul Senior Member

    Apr 21, 2020
    802
    243
    Cheshire, UK
    Thanks @Kinjane I forgot to mention that very important little detail:blush:
     
  7. StephenZ

    StephenZ New Member

    May 23, 2025
    0
    1
    Raleigh, NC
    Thanks for the amazing information!
     
    • Thanks Thanks x 1
  8. StephenZ

    StephenZ New Member

    May 23, 2025
    0
    1
    Raleigh, NC
    I actually have a OBDLINK LX scanner and tuneECU app. Is there any instructions as to how to do this myself? I drive a mini and stuff like this is super simple with BimmerCode. But dont know how complicated this will be on a bike
     
  9. RevPaul

    RevPaul Senior Member

    Apr 21, 2020
    802
    243
    Cheshire, UK
    You've now passed the limit of my knowledge / ability. At the point of updating the ECU I'd be going to a dealer. sorry. Anyone else know?
     
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