I would think that the bike would be exposed enough that a good cleaning every so often should be good enough. However, for the electrical system to perform properly for the life of the machine, I would strongly servicing all of the non-sealed electrical connectors as soon as practical. That means removing body panels and fairings to gain access to them.
The reasoning is that the pins within the connectors need to be isolated from the oxygen in the air in order to inhibit development of corrosion, which adds resistance to the circuit. In some cases on a marginal connection with a lot of current flowing, the oxidised corrosion resistance can be so great that the heat generated will add to that resistance, to the point of a thermal run-away resulting in burned insulation and electrical shorts. The grounding bus (spiders) in the 2nd Gen. Yamaha FJR platform comes to mind.
Some people swear by the application of ACF50 to these connectors. In my experience I found that ACF50 tends to wash out and needs reapplication after a couple of years. My preferred medium is silicone dielectric grease injected into the female pin of every connector, sealed or not. Being a high temperature grease instead of an oil, it will stay put and continue isolating the metal surfaces for the life of the bike.
While you’re at it, put a smear of dielectric grease on the rubber grommets and bullet points for your bodywork when reassembling. The next time you need to remove a panel it will go easier.