Documentation for mechanical and electrical gauges (oil pressure, water temperature, tachometers) provides wiring diagrams and sensor mounting instructions.
A: Only if you have a very old analog Equus multimeter or a vintage Equus 4030. Modern OBD2 Equus tools do not use flash codes; they use digital protocols. If your manual shows a picture of a jumper wire, you have a pre-1996 manual. equus manual