James,
I don't know if you remember from mine. I've got one by each seat. One installed on the right gear tower and the other is installed on a cover I fashioned for the rear stick. The one by the rear set is wired to my Hot Batt Bus to allow charging the battery if necessary and to charge my cell phone without having to turn on the Master. I used it for this purpose regularly. The forward one I installed in case I ever wanted to power any gadgets in flight. Flying 20 hrs a month has put a damper on purchasing electronic gadgets!
Take care,
Jerry