tacho and tacho lights failure - diagnosis please?

[Gothlander]

Is it the wire from the switch to the relay? or from the accessory plug to the switch ?

 

[Ransom]

...but smoke began coming from the heated grip switch. Mike

Excess smoke in wiring will always cause problems. With the old Lucas systems this was very common, I had to let the excess out of my Norton 2 or 3 times a year, did not realize Triumph still had this problem.

 

[Geek_Law]

GL - there is a relay. It's the proper set of Triumph heated grips. The relay seems to be controlling the power for the heat, and the switch is presumably controlling the relay. What worries me is how one of the switch wires could melt its sheathing.
Mike

Understood.

And the melted sheathing is indeed worrisome. At least you are making progress towards a solution. And thank goodness there was no issue with the R3 itself, just its goodies.

 

[Mike Sands]

Is it the wire from the switch to the relay? or from the accessory plug to the switch ?

Running from the switch on the handlebars to a black snap connector under the tank, are 3 wires red and blue (I think) plus the pink one which is the one that seems to have melted/softened/expanded its sheath
Mike

 

[Mike Sands]

Excess smoke in wiring will always cause problems. With the old Lucas systems this was very common, I had to let the excess out of my Norton 2 or 3 times a year, did not realize Triumph still had this problem.

In hindsight of course, the smoke wasn't coming from the switch but from the nipped wire very close to the switch .... but I know what you mean Ransom .... you'd think all that smoke they store in there would get in the way of the electrons wouldn't you? I think I'll take the bar end weights off at regular intervals and let the smoke out like you used to do.
Mike

 

[CADFather]

May need to source a bottle of this.



Yeah, it's Lucas Smoke, but the Triumph may not notice the difference. I found it here.

CAD

 

[Blastedbones]

May need to source a bottle of this.



Yeah, it's Lucas Smoke, but the Triumph may not notice the difference. I found it here.

CAD

Brilliant find!!! :lol: