info required please, still ac reach truck , still fm1 type 451 is marked on wiring drawing , fault 42, 43 can bus ?, have swopped units about but no joy , can hi lo seem ok but could do with more info ( almost same as komatsu fb14j-3r) , and r50-20 older type with steer card under floorplate trevorb at solutionmhe dot com have some other info thanks