Pro Gauge wiring - SymProjects The only spek gauges that work with the controller at this time are the temp gauges and Tach and Speedo. To hook up your Spek Temp gauges you need to use only. Pin 12 (Ground Black) Connect to Ground on controller Pin 8 (12VDC Red) Connect to 12VDC on Conrtoller Pin 3 (Black) Connected to same ground as above Pin 2 (Temp Input-RED) to S1-S2-S3 Autometer Gauge Wiring Diagram | Wiring Diagram Autometer Pro Comp Ultra Lite Wiring Diagram Fresh Auto Meter Wiring – Autometer Gauge Wiring Diagram. Wiring Diagram arrives with several easy to follow Wiring Diagram Guidelines. It’s intended to aid all the average person in developing a suitable method. These guidelines will be easy to understand and apply. AutoMeter Mechanical Temp Gauge Installation - YouTube Looking to install a traditional mechanical temp gauge on your vehicle? This video details a typical installation into an intake manifold and some of the com..