Bought a new speedo sensor for my SIP speedo (run by Varitronic) - the old one got damaged. I know that the blue light is supposed to stay on but mine is just flickering on and off. The lights on the scoot are spot on, the horn works as it should, engine runs great so I assume that the electrics, earths etc are all good. The speedo lights up all as it should but as soon as I add the speedo sensor the digital display (the speed numbers) starts jumping all over the place showing random numbers

like I say, the speedo sensor blue light flickers like it is only getting electric intermittently, I have checked all wiring for loose connections etc but can't figure it out
