Yea, I'm the same guy with the thermostat questions. The motor is a 2 stroke 1998 merc 25 with electric start. The model number is 0G641380 and I was wondering how would I install a temp guage. I know there is a very small allen wrench plug on the right side of the water jacket between the #1 and #2 plugs, is that were the sending unit would go? If so where would I find that small sending unit and how do you rig a temp guage from scratch? Any help will be greatly appreciated.
