Hey i just replced my Lunar 2-1/16 watertemp guage (4137) and its still only reading under 150 degrees. I replced it cause the old one was doing the same thing and i thought it was a deffect. I wired everthing correctly as instructed. and i know my car gets over 150 degrees cause i drove all day in 90 degree weather. Please help me. Did wire something wrong