Classic car automotive electrical systems part 6 how automotive relays and fuses work weve gone through basic theory and major components over the last several articles so by now you should be fairly comfortable with overall circuitry. Locate fuse and relay fuse box diagram identifying and legend fuse box opel vauxhall vectra b 1995 2002. As in the diagram a wire is run from a 12 volt power source to the switch in the cab and out to the relay placing a fuse at the source of the power follow the relays wiring schematic when connecting the wires to the relay one of the relays terminals goes to ground. Dozens of the most popular 12v relay wiring diagrams created for our site and members all in one place if you need a relay diagram that is not included in the 76 relay wiring diagrams shown below please search our forums or post a request for a new relay diagram in our relay forum
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