Could not care less since leaving school in in 69 been reparing trucks eversince and still at it not been a bad living.Getting a bit stiff now but still enjoy it most days. A few years ago you could bypaas this put a bit of wire here and their and get away with it. Now you cant if you havent got the laptop and programe your knackerd. We get by but only just. Trust me it gets no easier with time. If only pepole relised how hard a job it is ALAN