I am not sure if this is a related issue, BUT, I installed a full time battery conditioner on my Ram 1500 and started having problems with radio functions
I believe this may be caused by the battery desulfator function, a combination of short duration pulses at different rates depending on manufacturer.
My system is through an A relay but I would recommend powering off the charger before turning on ignition.
The device may not be the problem but it is suggested as a caution
73 Steve VE5SR
Steve Lenaghan