GAUGE DOES NOT SELF-CALIBRATE AT STARTUP
Does the unit have power and ground?
On the 12-pin connector, check the following pins:
RED: 12V switched power- this is from the fuse block, hot with key on
BLACK: Ground
Probe the pins on the harness to verify with a multimeter or a test lamp. With just these 2 wires connected, the speedometer should power up and do a full sweep.
YES IT WORKS> DONE
NO I still have an issue: Call NVU tech team at 248-850-5482 have the code SMS1 available