i was curious on this one, since im considering getting back into a cadillac seville since ive been without mine for almost half a year now. how hard would it be to add an aftermarket water temp gauge like something from autometer? mounting it inside the car is no issue, but where would i put the sensor? id also like to add an oil pressure gauge, i was thinking i could put that somewhere inline with the oil cooler somehow, since i know oil is pressurized there. the trans temp gauge i can also figure out on my own but i really want to know how to setup the water temp gauge. any suggestions?