Hi all,ive been asked to fit a new engine control panel to my friends yacht,its a volvo penta 2003 3 cylinder diesel,the old tacho has been lost,its a alternator driven tacho/hour meter,the one he has is a vdo unit,on the back is a switch to select the number of cylinders marked 4cyl 6 cyl or 8 cyl,its not got a 3cyl option,could it be moddified to work with a 3 cyl engine,new ones are in the £600 ish price reigon,cheers m3vuv