Hello tdg Pros. I hope someone can give me some help on this I've got a 2002 International 4300 set up as a rollback. I'm looking for information on retrieving and clearing diagnostic trouble codes for the engine and body what are the procedures 4 each and is there a list of the definitions for those codes? Mainly I'm looking to get anything old cleared out so I can have a new baseline to maybe give some direction to go on a few issues I'm having the first of which is a new problem I'm having since replacing both the supply and return fuel lines from the tank to the engine due to a failure of one of the original lines which resulted in a pretty severe fuel leak. all the lights are flashing on my instrument panel rocker switches. This is a 6-pack of switches whicch feed to the rpm located on the battery box. Everything worked correctly before the lines were replaced. And as far as I know none of the system was interfered with during replacement of those lines. I have double and triple check all my connections and made sure I didn't pinch any wires since I did have to remove the doghouse cover. Does any one know what all the lights flashing are an indication of, on this system?