I just bought a VDO oil pressure gauge and a VDO Voltage Gauge but neither came with a wiring diagram. The oil pressure gauge has three prongs marked "S", "+" and "-". The voltage has two prongs "+" and "-". Is the "S" to the sending unit, the "+" to a hot wire and the "-" to ground for the pressure gauge? The Voltage is pretty obvious. Anyone have any wiring diagrams for these things?
- posted
20 years ago