Advice on Speedo recording KM to Miles
Posted: 03 Jun 2020, 16:41
Bit of backstory, I've picked up a dash pod with a rev counter and clock, my current pod doesn't have the clock nor a rev counter. The one i've picked up is in a bit of a state with a great deal of broken plastic being held together with tape and glue, the ribbon connector is also in a bit of a state with the copper curling up on itself but I think is servicable. In comparison my current binnacle and cable is in very good condition, but obviously different and less complex. I cannot use the clock in it's current place if I were to swap the lot over as it's just blank. Having said that I do need to get a replacement top steering column housing and they have space for a clock so maybe I could put it there instead with a bit of wiring?
My Old Speedo doesn't have a trip or buzzer and is numbered 805 on the bottom and records in miles and seems very bouncy. The "new" speedo has trip and buzzer wiring but only reads in KMH and is numbered 500 with quite a bit of circuit board in it which I assume is for the buzzer and other magical stuffs. The needle is very smooth and doesn't bounce I guess it has some wizardy my old one doesn't.
I've carefully taken both pods apart and had a look at the speedo, I've noted they have different gears on the side which I assume is for recording Mileage / Kilometers on the odometer, the MPH gauge has more teeth and a different worm gear than the KM one. I assume the difference in teeth count is what records the miles / KMs (wrongly no doubt) however if that is the case then surely I could swap them over to allow the odometer to record in Miles.
I know tampering with mileage is illegal, but I don't see an issue if you set it to the mileage it was at on the old speedo/odometer.
Am I just making more work for myself in trying to do that? Is it even possible? Should I just use some flyleads to wire up the Tachometer / fuel / temp gauges to my old ribbon cable and leave my old Speedo in? I know you can hardwire a dash pod and get rid of the ribbon cable entirely but those kits are pretty darn pricey.
Any thoughts from people with this kinda experience would be greatly appreciated
My Old Speedo doesn't have a trip or buzzer and is numbered 805 on the bottom and records in miles and seems very bouncy. The "new" speedo has trip and buzzer wiring but only reads in KMH and is numbered 500 with quite a bit of circuit board in it which I assume is for the buzzer and other magical stuffs. The needle is very smooth and doesn't bounce I guess it has some wizardy my old one doesn't.
I've carefully taken both pods apart and had a look at the speedo, I've noted they have different gears on the side which I assume is for recording Mileage / Kilometers on the odometer, the MPH gauge has more teeth and a different worm gear than the KM one. I assume the difference in teeth count is what records the miles / KMs (wrongly no doubt) however if that is the case then surely I could swap them over to allow the odometer to record in Miles.
I know tampering with mileage is illegal, but I don't see an issue if you set it to the mileage it was at on the old speedo/odometer.
Am I just making more work for myself in trying to do that? Is it even possible? Should I just use some flyleads to wire up the Tachometer / fuel / temp gauges to my old ribbon cable and leave my old Speedo in? I know you can hardwire a dash pod and get rid of the ribbon cable entirely but those kits are pretty darn pricey.

Any thoughts from people with this kinda experience would be greatly appreciated
