Electrical Fault Bonneville T100 2015

Believed electrical fault Bonneville T100 Spirit 65 Plate

When I turn the bike on and rev or accelerate the clocks/tacho all switches off and comes on again as though turning on from the first time when you put the key in the ignition. Engine light stays on as if there is a fault.

At the time I took it back and forth to the dealer who claimed no issue and switched off the engine light.
Then back to them again they kept it for a day or two and made guesses of what was wrong but had no real answer. They tried to blame on turn handle bars to the left or going over a bump which indicated a wiring issue. They then queried the alarm and immobiliser, which was recalled and replaced with a new one. They then tried to completely remove the alarm altogether to see if this resolved the issue. None of worked. This went on until ultimately the warranty ran out. I now cannot get an MOT on the bike due to the fault so it’s off the road until this can be figured out.
I have a video of the fault and can email this to anyone who would want to see what I’ve described. I’m wondering if this has happened to anyone else? If so what did they do to resolve this?
I’ve tried to speak to Triumph directly and they are not interested in helping and direct me back to a dealer who want to charge me £80 an hour, to find a fault they had so many opportunities to find prior to the warranty expiring.

 

Thanks for the response. I believe it has been replaced twice because they assumed it was the battery. The last time they did the battery I believe was when they had the alarm out for the last time. Then promptly tried to keep the non faulty alarm despite I paid for that as extra on the vehicle. Believe me I got that back grudgingly.

 

Thank you for the response. Do you think I have a cat in hell’s chance what with it now being out of warranty?

 

https://www.dropbox.com/s/qskrnpvgci4n9i6/Video 02-04-2019, 16 47 09.mp4?dl=0

I’m hoping this link works. It is a link to the video showing what happens and how the fault appears.

 

Thanks for all the suggestions so far. On Monday a friend, my Dad and I got together and had a gander. We managed to jump her and have a look at the error in all her glory.

We checked the connections under the seat, which all seem sound. We did this while she was running. Then we moved on to the front of the bike. We were looking for a reaction on the clocks when moving the bars through their full range of movement. There was no change.
Then we had the head light open to check for loose connections and anything obvious there. All seemed sound, no reaction on the clocks when these were tugged or wiggled.
We then filmed a new video of the wild tacho light display when revving the bike. My friend concluded that it occurs at 40,000 revs, however my Dad and I are not convinced it’s that picky. We have also identified a flat spot when the bike is running. We took the video and the problem to another Triumph dealer who seem stumped but offered to have it in to diagnose on the laptop or to use their portable diagnostic machine and take it for a run and see what it says while being used as though normally. Or to reset the ECU to factory and see what happens, which to be honest seems logical and I wonder why this was never done before.

Further to this I call Triumph themselves about what would occur if I replaced the tacho. They are unsure if this will resolve it, so not happy to sell me one at this stage as I cannot return it after it’s been fitted.

I have written off to Triumph as well, as advised in this thread.

My next attempt will be to unplug the British Customs indicators and tail tidy and plug the stock ones back in and see if this makes a difference.

I have looked at similar threads and seen problems that actually sound like mine, however not really seen them resolved as of yet. Hoping soon I have a resolution to write back on here for anyone else who may suffer this in the future. Its probably something completely daft.

 

Yes apparently so, well according to sources my Dad has spoken with. Apparently my edition differs in that respect of the standard T100 prior to this.

 

Yep that been tried by the dealer, who then resorted to turning off the engine fault light and sending me on my way.