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?
VDO gauges
Dec 06, 2003
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