You either need to splice the red/yellow wire into your ignition wiring or run it to the positive terminal on your battery along with the red wire used to power your compressor. That will actually make the isolation switch (the rocker switch) do its job. The result will be the same regardless of which method you choose, but if you splice into your ignition wiring you mitigate the risk of draining your battery, as you cannot run the compressor without your Jeep on.
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