Jagan, my theory is that the Loco was painted from the inside too & so the doors have been left open to dry the paint.

The latest diesels are bulgies ! That observation crumbles another belief that only rebuilt locos have the 'bulge'.

the loco was being stripped and being put back to get it into running condition.the cabin was a mess with wires all over the place.

Why are most of the doors and access panels open?

The Class designations are now being painted on top near the headlight instead of near the buffers as usual

it is a WDG-3A. the marking can be clearly seen

It's actually a WDG3E. From when did Express trains start getting WDGX locos?

The working rule on the Braganza ghat says that the leading loco during the descent and the banking loco during the climb have to be equipped with the AEB. The loco is probably attached at Londa on the rear of the loco so that once it unloads at Sanvordem (or Vasco ?) - the KJM power would just work the empty rake through the ghats all the way to Hospet. The rake would be banked through the ghat (climbing) with AEB equipped WDG 3As - but the KJM power would be leading during the climb.

I think the maroon-cream-gray livery of ED diesels is the best of the lot.

its not a black box exactly neither it is a part of the loco.its the driver's luggage box and they put it on the floor board for short trips when they have to drop off another driver some place close.