24-08-2021, 08:49 PM
I have checkedĀ my speedometers with my TomTom. All my cars are equipped with sockets; no need for a voltage covertor because the TomTom runs at usb voltage (5V). Having had the Riley speedo rebuilt and geared to suit my higher than standard axle ratio the speedo reads exactly the same as the TomTom at 50mph.