I am thinking about adding a temp gage to my 84 omc 115hp motor. Can anyone give me advise on what I need to do other than aquiring the gauge. Does the head temp sensors in each side of block need to be replaced as well. Thanks for any insight anyone can offer. I always test my warning system, but I still worry about possible failure. It would put me at eez if I could monitor the engine temp. Finally approximately how much for the parts needed for the job......Thanks Walt.