My temp gauge is not working, i bought it new. I'm trying to troubleshoot if i have a bad temp gauge or thermostat. Ive tried the following - attaching a wire to the thermostat wire attachment on the engine and then to the negative battery post, the temp gauge didn't move. I then attached a volt meter set on 20k ohms to the gauge electrical connectors on the back of the gauge, black/neg to left terminal and red/pos to the right terminal, the meter read -8.75 when running, and -8.3 when not runniong. The gauge never did move. What does this mean? Do i have a defective gauge or a need for a new thermostat?? Any help appreciated. My 56 chevy has had a 283 put in it in place of the 235 6 cyclinder. Thanks.
