Just to point this out you two may know this but there are two blue wires that come out of the PCats tuner. One is constant power, and the other is the antenna power. If you're still having issues you could use a relay that is activated by the remote wire.
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Drive fast, Play it loud!!!
20GB Original Blue Lens MKIIa Rio SN 030102760, Blue Buttons.
20GB Original Green Lens MKIIa Rio SN 040103268 Grey Buttons.