i need to know where an easy to access constant power wire is that is powered while the engine is cranking. reason being, just in case you dont know, the gauge has an auto calibration, once it gets power, it zeros out. if the power is cut during cranking, it will zero on whatever the vaccum(sp) is when the power is returned. i have been searchig tuners for about 30 minutes. cant find crap except arguments about which gauge type is better, mech or elec.....

___________________________________________