What is the reason for hardwiring ground wires for cooling fan and a/c compressor?
I have a 2007 Mazda RX8 and am getting it ready for the hot summer weather. Put a new a/c compressor in only to find that it stays running whether or not the switch is on inside the car. This lead to the discovery that the previous owner had hardwired the compressor to stay on by taking its relay out of the picture and grounding the wire to the car frame. I also found that the ground wire not only is spliced to the a/c compressor relay, but the cooling fan as well. My question is why do this? What is the benefit or what would they have been trying to accomplish besides burning out the compressor? Can I do away with the ground wire and just have my compressor run as normal?
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