Speedo Day At Sheddington!

No, Not That Kind Of Speedos

We were working on the speedometers for both the Kawasaki and the Panther.

The Kawasaki was fairly straight forward, just a broken cable to replace.

However, you need to remove about a hundred screws of sixty different lengths to take off the various fairing parts allowing access to the speedo.

With that problem solved and all of the plastic reinstalled, we moved on to the Panther.

Here's a top tip, when you have a part or tool that is essential to the project, set it next to your beer, then you will have no trouble finding it.

We modified the input device to allow it to work with the rear wheel speedo drive and hooked it up to the system.
The gauge seemed to work but nothing we could do with the input device would make the needle move.

Obviously a bit more work was needed.
So, using our normal troubleshooting technique, back to basics, what did you last touch?
All of the wiring connections were stripped and cut apart.
Then the wiring diagram was rechecked.

Using the speedo negative earth (ground) system it was found that there was a variance in the color scheme. The wire labelled "Not Used" on the right side of the panel was not in fact hooped but striped. With my aging myopia, I had connected this to ground!
On the second pass this problem was corrected and the system worked as it should.

There is a link below showing a video of how it now works.

Smith's Gauge Electronic Speedometer

A final word on SPEEDOS.

Who could put it better?

Ciao Bella
Norm