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Offline Mr. B.

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Re: No Rear light/Brake Light/Horn
« Reply #32 on: July 18, 2018, 10:01:31 PM »
Hi Coconut,

as you mentioned, I checked the wiring, turned the handlebars several times.
Nothing happend.
Sorry, no idea why the fuse blew up.

Cheers
Klaus

Offline Coconut

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Re: No Rear light/Brake Light/Horn
« Reply #33 on: July 19, 2018, 06:50:02 AM »
Thanks for the update  :028:

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Offline Coconut

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Re: No Rear light/Brake Light/Horn
« Reply #34 on: July 19, 2018, 01:51:35 PM »
Update :

I had this problem recently just after the first Annual Service.

Same Fault Codes, same symptoms, same Fuse blown.

The difference being that replacing the Fuse didn't fix the proiblem -
it blew again as soon as the Ignition was turned on.

The fault was fouind and fixed today - no faults on Brake Light switches or Relays,
no faults with the Horn or Horn Button, and no faults with the Position Lights ....

It was a chafed wire leading to the TOP BOX Power Socket !

This was a surprise as, according to the Sevice Manual Wiring Diagram,
the Power is not provided from Fuse No.6 of the Rear Fuse Box,
so that will be a separate enquiry to Triumph about the accuracy of the Diagram !

The wire that was chafed runs along the inside of the panel that the left pannier attaches to.

There are only two wires in the loom which runs up to the Top Box Sliding Carriage connector,
and the insulation on the posiitive ( Red ) wire had some how worn through,
and the that wire was making contact with the Frame causing a Short Circuit !

Hopefully this information will be useful at some time in the future,
to anyone else suffering the same problem  :028:

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Offline earthman

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Re: No Rear light/Brake Light/Horn
« Reply #35 on: July 19, 2018, 08:00:36 PM »
That does sound a bit odd,....I'd check for power at that socket then pull fuse number 6 and check again.

Offline Coconut

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Re: No Rear light/Brake Light/Horn
« Reply #36 on: July 20, 2018, 09:19:04 PM »
Update :

Rear Fuse Box Fuse No.6 ( 15A ) DOES provide Power to the Top Box Relay,
as well as the Position Lights, Brake Light and Horn.

The wire IS shown on the Trophy SE Service Manual Wiring Diagram,
but "Top Box Relay" is not included in the Key for the Fuse Box layout,
on either Page 18.17 of the Service Manual, or Page 150 of the Owners Handbook,
which didn't help  :159: !

It IS mentioned in the installation instructions for the Sliding Carriage assembly ( Page 10 ),
but if the Dealer has done the installation, the Customer is unlikely to be given those instructions !

Anyway, it's all fixed now  :152:

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Offline earthman

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Re: No Rear light/Brake Light/Horn
« Reply #37 on: July 21, 2018, 08:08:44 AM »
When I think about important safety items such as brake lights etc, I would have thought that each 'critical' item should have its own fuse.
Maybe that's just not practical or it's down to cost?

So, be careful what you plug into that top box socket, if that item becomes faulty, that fuse blows, you could ride many miles unaware that the brake lights etc are out.

Offline Coconut

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Re: No Rear light/Brake Light/Horn
« Reply #38 on: July 21, 2018, 08:15:24 AM »
Good point - and one to bear in mind if you see the Engine Management Light come on,
which it will do if that Fuse Blows !

NOTE : This ONLY applies to the Trophy SE Model.

On the Standard Trophy, if the Top Box is fitted, it is controlled
by Fuse No. 5 of the Front Fuse Box, which also controls
the rear Auxilliary Socket, and the Heated Grips !  :087:


« Last Edit: July 21, 2018, 08:18:44 AM by Coconut »
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