I looked at an ex-po-leece Road King some years ago. What put me off was the high output alternator that was in the right hand pannier (to power the wah-wahs, lights and radio etc.)....
I'm not familiar with current police bikes but some years ago police bikes came with ABS before it was available on the consumer line-up. That early ABS pump was quite large and located in the right saddle bag simply because it had to be added on. HD's subsequent ABS system is more compact and has been relocated from the saddlebag and integrated.