speedometer

Hi. I recently bought a Zaddox speedometer for my 2009 SMC. I’m having trouble installing it and don’t understand the wiring diagram for the bike. I measured the cable i thought was ground and power and both of them delivered 12v while the other cables delivered close to 0v, which means that the...

Speedo now reads intermittently and jumps from actual speed to zero and back, I have checked the main speedo wire and everything looks okay, has anyone had this issue or know of any ways to resolve as I will soon have my MOT which it will fail with this issue

hello my ktm exc speedometer is only reading my speed up to 7mph. i have checked for damaged cables i found nothing. thanks in advance