Originally Posted by RichardV6
Originally Posted by Mark+4
Hi,

The Speedometer receives the data for all 4 gauges and then passes it along to the others. I took a picture that shows the connection on to the Rev counter which then passes it to the fuel and Temp Gauges, which are out of shot.

The Speedometer is on the left of the picture with the yellow connector which receives the signals, the other connector with 3 wires out goes to the Rev counter that has 3 in and 3 out which go to the Fuel and then Temp.

[Linked Image]

Hope this helps.

Can I assume engine fuse 3 and its 12 volt feed out to instruments on purple/red wire has been thoroughly checked?

Assuming it has, without VDO instrument info it's difficult to be sure but all instruments affected by your fault are driven by CANBUS data. Thoughts then are that the Speedo receiveing this data first is just a means of daisy chaining and data passed on isn't processed by same. Poor connections aside I wonder therefore if its worth unplugging each instrument by way of testing thinking

that was my thought too…but as a dealer has been involved, one might think (or hope?) they know what they’re doing! 🧐

Doug
2011 Plus 4 in Rich Maroon

1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900