L7 yes they all have 5 buttons one is a shift light button so to be ignored, are you sure you are not missing the fact they do not number 1,2,3,4 Caterham fit them 1,2,4,3 , we know it works because it changed in the first place, :-) this is my original note to my self stack buttons left to right, shift light switch, switch 1, switch 2, switch 4, switch 3. L - R.... Shift light, 1, 2, 4, 3. 1 & 3 to switch MPH/KPH” you can identify button 1 , its the one that when pressed and held displays peak values, on my CSR the first button is shift light so second button is 1 and last button is 3 Tim