When I purchased my 53' on the lower helm the is a set of port and starboard pyro meters, they were working for a while, then quit. I was told that the thermal couplings that screw into the maniflods were bad. I purchased new ones and instaled new cables from the motors to the lower helm. again they worked for a while then stoped. this time I saw that the gauges them self had condisasion were I could not read them. if I taped on them they seemed to work for a while. someone told me that having the meters are a good thing and they were on the boat already. sould I replace the heads? or can someone tell me if there is anything that can be done to get rid of the condensasion! I don't knoe enough about pyro meters, and can use some help. thank you folks