Combines N6 Series 4 Boost and coolant temp guages

yes, there is a little bulb in the gauges, all the same. The boost has a rubber line running all the way from the intercooler manifold to the gauge, simple as can be. Find the line, find the hole and fix it if the gauge checks out good. Think you can pull the panel below the swing out window and see the hose _ gauge.

Thanks, will check it out.... and check _ replace bulbs.

Al, A couple of places to check for a hole in the rubber hose feeding the boost guage would be where it enters the cab from the outside.(Mice like to chew in this area) Also,they have been known to chew on the hose right behind the small cover that holds the wiring and throttle cable below grain bin.The first cover back from the front has a access hole behind it for the fuel sender.Mice like to get in there and not only chew the fuel sender wire and ground wire,but also the wire harnesses and sometimes the boost line. Good luck, Hyper Harvest II