Thans for the posts so far. Ths is the setup Im running. The dial on the lower right side is my temp guage. Have no idea of brand/type, it was like that when I bought it :)

That's OEM RVF if I'm right, won't work properly like Mark says.

Great, thanks guys. So Im guessing the fix is... Buy a VFR tacho!!! :)

Anyone want to sell me one? Cheap please because its a trackie and I binned it Sunday and imagine I'll bin it again haha.