2018 NEWMAR NEW AIRE Electrical System Problems

RV was included in 20V-404. DTNA tested my vehicle on 7/29/2019 and said it did not need a PDM. Received additional info last year saying a new campaign will be replacing all PDM's in the original group regardless of test results. I have inquired several times with the local Freightliner center and the service telephone line and am told no recall is listed. My 2018 Newaire currently has no brake lights, turn signals or parking lights in the rear. In addition the AC compressor clutch does not engage. I have recently returned from a cross country trip and had intermittent AC issues and now realize that my rear lights were also out during those incidents. There was no indication of all rear signal lights being defective in the cockpit other than the AC not working. Vehicle is parked until I get some resolution from Freightliner. I spoke with them today...