Hi Stacka,

Before or after a curry?

When i was looking into this I took the tacho off the speedy and with a rough measure the Tacho was:

59 mm width on the body
44 mm deep to the underside of the collar
The opening on the console is around 64mm wide, or slightly bigger.

This was all with out a micrometer though.

The acewell 2856 will fit with Dimensions: 64mm x 40mm and 70mm on the outside collar.

http://www.acewell.co.uk/Acewell%20S...ion=full&id=18

WARNING - WARNING - with the 2856 model it has LED warning lights and so you can't have these and the tank console ones going at the same time as I have been told the neutral pulls more power and could blow the speedo. I had it on the speedo warning lights but it was crap so went back to tank console.

Thats why I think the one Keith has (2853) is a better option if you want both lights going, but not sure if they are both the same size as Keith said he had to widen the tank console hole and I didn't.