We have just got some rigid scanias and one of them the speedo does not work and the mileage indicator just shows 2 white lines.we believed we had traced the fault to the relay in the top left hand of the fuse box relays as when we took it out of one of the working trucks it cut out the speedo and mileage indicator,however when we swapped the relay into the faulty truck it did not cure it.any suggestions would be gratefully recieved as we do not want to put it into maintenance because it would come out worse lol.
neil46:
any suggestions would be gratefully recieved
Box of matchs 
10 Ron unleaded aswell. 5 gallons should be enough
then get a daf.