Can I use this method to determine the positive and negative of the car light bulb wiring? I need to wire the reverse camera and need to determine the polarity of the reverse light. I plan to connect the wire to the car body (as a ground) and connect the tip to each of two wires of the reverse light. I assume if it lights up, it means the wire is positive and if not, it is negative? Thanks
Can I use this method to determine the positive and negative of the car light bulb wiring? I need to wire the reverse camera and need to determine the polarity of the reverse light. I plan to connect the wire to the car body (as a ground) and connect the tip to each of two wires of the reverse light. I assume if it lights up, it means the wire is positive and if not, it is negative? Thanks
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