I’m not sure on your specific bike how maintenance charging would be accomplished on your bike. I have heard about the “ procedure” to enable charging through the DIN plug- like a cigar plug (charging port in a car).OM,
My bike (‘02 RT) is a Non-CANBUS equipped bike. You and the rest of the guys on here have decades more experience than I do with these Oilheads, so it wouldn’t surprise me if there is some kind of special procedure. It leaves me wondering though…what am I missing? I’m not aware of any special procedure. Just plug and play.
I did some rootin’ around and found this old thread (now tagged) which has some concise information on how to re-enable that DIN plug to receive maintenance charging-
Trickle Charge thru Accessory plug?
I have a 2009 R1200 RT. Can I keep my battery charged using a smart trickle charger plugged in to the Lower Accessory socket? Does anyone have or know of any info as to the do's and dont's ? Southerndude

Too much wondering for me. Having an accessory pigtail lets me confirm yep, I connected it.
HTH
OM