How does it work? It starts at the sender with 1 wire when you get to the gage you have 3 wires, mine pegs out when you turn the key on same thing when running. HELP this is 91 stock mustang. Thanks Mike
I had my gauge hooked up to a "light" sender. With key on the sender grounds until oil pressure un seats it. For a gauge you need the bigger sender so pressure will register on the gauge. Hope this helps, Bob
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