Ever sence i bought my truck like 4 months ago my temp gage does not work it stays at cold

so i put a new coolent temp senser in it and it still dint work...so the last thing i thought up was th gage might be burnt out so i got a new one and put it in and nothing sooo tom its going in to the local shop to get rims so i might have them look at it.....any ideas before i pay to have it fixed?