I just got a 27 ft Hunter with a 8hp Renault. I wanted to put a water temperature gauge in it and was wondering if anybody knew how to do that in-line. I've seen aftermarket products for cars where you can plug a gauge into the radiator line via an adaptor, but I'm not sure if such a thing exists for boats. The water lines on this thing are pretty small.I feel like I'd be a lot more comfortable motoring for extended periods if necessary being able to look at the temp- or is there some other obvious way to know when a diesel's running hot? I've never had a boat with a diesel before.thanks