Getting Speedo to work

[z20leter]

Does anybody know how you can get the speedo to work on a corsa C as i have done a z20let conversion and still haven't found a way to get the speedo going. I heard you have to buy a little module or something, if anybody can confirm this and where from?

Any help will be great :D

[dannysport18]

speed will come from the abs unit on the car

[PLB]

speedo reads info from front axel abs sensor!