Speedo drop off.

[jtandersonjr]

I am not saying this is an issue , but yesterday on my way home I was cruising through a school zone at around 20 to 25 mph in second gear.  I looked at the speedo and it dropped all the way to zero and came back up. Any thoughts. Also where can I buy a factory service manual and wiring diagrams.

[cropbiker]

This has happened to a number of us.

Consensus is that it is not an issue and just a peculiar combination of signals through the can bus that cause the speed to drop to zero. If you do have cruise control on at the time it also kicks that out.

Provided speedo comes back i wouldn't worry. Happened to me once that I know of in 25,000 miles. And only really noticed that because the cruise cancelled.

[jtandersonjr]

Thanks , I still would like to inquire about the service manual and wiring diagrams.

[atrophy]

You can find the manual on Bike Bandit.  $105.

Look up the Trophy and then factory tools/Manuals.

good luck

[Coconut]

You can buy a Service Manual ( Which includes full Wiring Diagrams ) from any
authorised Triumph Dealer, or from various "On-Line" authorised Sellers.

There are NO official on-line electronic versions of the Service Manual,
so if you should find any they will be unofficial, and in breach of Triumph Copyright !

After you have your Service Manual, check out this Topic  :
Audio, and Service Handbooks + Service Manual errata

There you will find details of a number of errors contained in it ! 
( Also listed in that Topic are errors found in the other
Owner Handbooks supplied wtih each new Trophy ).

Cheers 

[Michel1960]

Speedo dropping off has happened to me a few times. Not really worried about but I did mention to the dealer who opened a case about just so its covered by warranty in case it become a bigger problem, that way you have proof it was a prior known condition. Mine is about to run out!

[jtandersonjr]

thanks for all the replys

[OhioWinger]

I have noticed it a couple of times, when using cruise control.