Hi Jim.....
I never have used the DSC feature in any airplane.
As far as charging....I stopped using the harness when I changed to LiIo for radio power.
I have always removed the charge connector/DSC from your regulators and re-shrink them.
I started using a Deans Ultra on the battery direct charge lead with 18awg meter wire to the battery...re-shrink the battery too.
The second heavy battery lead goes to the regulator.
I have always charged in the airplane.

Now that I am about to change to LiPo for radio power.....uhhh...I'll probably remove the battery....HEH