Further update. So I decided to buy another km/h to mph converter ( well 2 actually, one they looked similar to the one that was in there, and a different looking one) mainly so that I knew I had a new device / chip or resistor or whatever is in them and secondly so that I had some advice / diagrams on how to wire them in. If anyone has a detailed circuit diagram for the speedo cluster I’d be greatful as I ended up having to work out what was need by guesswork and some reference to the instructions that came with the converters.
so I have a functioning speedo again, soldered in, which is indicating speed in mph, but the odometer is still not working.
I decide to take the back off the speedo cluster to have a look at the circuit board. I felt sure someone had been in here before because there was a screw missing and various screwdriver type scrape marks. And my odometer is showing 5 figures eg 61,223 miles or Kim’s ( not sure) whereas I expected it to show 061,223 ?? I don’t know if this is a fair assumption as I don’t have anything else to compare it with.
Anyhow, I attach a pic of the back of the board … if anyone else has a similar pic it would be useful to see to compare. My attention was drawn to the bottom left corner which is where the odometer display is… resistor R107 and resistor R222 might be missing on mounted on the other side of the board?
again, any suggestions gratefully received. I want to get to the bottom of this and get the odometer working again.