A 1976 GMC camper is probably one ot the last things that you’d expect would ever leave the earth. That doesn’t mean it can’t be improved by an engine monitor originally intended for an airplane. The device measures exhaust gas temperature on each individual port, water temperature, engine rpm and speed. Alarms can be set for each input and the device gives vocal warnings when these levels are reached. There are a lot of other gadgets he’s added to his vehicle on the site (i.e. computers, tire pressure monitors, and cameras). So, have a look around.