Gaurds panels are basically a door open and close button, a bell button and a door closed indicator light located on both sides of the cab rear bulkhead. The buttons are still there, though with different uses now.
Ok lets see if i've got this picture posting thingy type stuff sussed -
Also where the door open buttons are just below where the TBC is it was just a blank plate - when they were preparing for one man they then placed the buttons where they are now, it made it easier instead of having to get out of your seat and open the doors on the other side, it was lovely at Barking eastbound because you could open both sides without leaving your seat, The guard also made all the P.A. announcements, the close button on the left hand side of the T.B.C. next to the two open buttons used to be a cab door open button. when one man came in they blanked off the position switch location because they said it would be too much weight for the driver to carry around. we never used to use the stabling light until the train was stowed they said it would give the driver added protection at the back of the train. I'm sure some of you can remember when we used to be Guards or Drivers! some stories to be told there I bet!
Althought he Guards position switch key slot on '73 'C' 'D' stocks has been plated over it is still operative. When the driver puts his control key into that slot and operates it the link connecting the two turns both barrels.
No on Q stock there were two separate sets of batteries. The drivers set which were under the transverse seat on the off side behind the cab and the Guards pair which were under the nearside tranvers seat immediately behind the position. Both sets had their own trickle charger from the juice. The east end motor of the 4 car block was always in the middle anyway but I never heard of weak or gassing batteries on a Q. Incidentally both these seats had a lamp in the car light series under the seat as well. Can you think why?