Marcsteeves
Junior Member
Help. I have a 2018 ram 2500 st.. base model. Radio is a Ra1 and has 4 speed fan. I installed a ra4 and a 7 sped resistor and used a 4 wheel electronics radio upgrade harness. Everything is working aside from ac.. compressor no longer kicks in after conversion. Anyone ever have this issue ? 4we is not replying to any emails to help me. Paid more for the harness and shipping than I did for the radio and module.
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