2003 RC50 with 1100 hours on it. Noticed the coolant temp light came on dim, then got brighter after. Engine did not seem to be running hot. Hoses were hot to the touch but I could grab on to them. Radiator fan was operating, and air coming out seemed to be normal temp. This is just used around our land at our cabin, it doesnt not get driven hard at all. It was way up north and I did not have a way to measure the actual temp. I want to put an actual temp gauge in and not rely on a light. I am assuming the old sensor can be taken out and a new gauge sensor installed in its place. Does anyone know where this sensor is located on the engine (perkins) and what size port it is? Machine is 5 hours north so I cant just pop out there and take a look. I have not started looking for a new gauge but want to make sure I get the right size as it is a long way back if I get the wrong size. Appreciate any info!