Charger

[texskeet]

Where is the charger installed on a 2017 DS?

[Stretch]

I have same coach. Not sure but open the driver side basement door, just past house batteries.. look up and you should
See it

[twinboat]

That should be an Inverter/Charger. Has 2 big battery cables running from it to the house battery bank.

Magnum or Xantrex are the common brands.

[Dutch Star Don]

Your inverter/charger is a Magnum (big white box) and is mounted between the frame rails on the ceiling of the pass thru bay. No much there to service unless you're adding a BMK. There is room for storage around the inverter, so be careful not to pack anything around it that will impeded air flow.