Looking for some electrical advice. I am using a Westach temp gauge on my 582 coolant system. Had the system wired as per 1992 Kitfox instructions with separated mag on off switches. I have since installed a ignition switch with left right mag and start. That all works fine. What I have noticed is that with the engine running and master on it indicates 160deg. If I turn the master off it indicates 170deg. Any thoughts and suggestions would be appreciated.