The next step is to made lightned tacho nalden. Biut many people said to ma that is not possibile to mke it on tacho with tachonalden stop.
They are right. It is not possible to mount illuminated needles on a speedometer that starts at 20 km/h.
You can either use another speedometer that starts at 0 km/h or you light up yours with blacklight. Than you can paint the needles with a special color and they will glow in the dark.