A01 harness questions

[BananaDan]

I bought an A01 setup on eBay, and one of the harnesses has me a bit puzzled.  Below are two pictures of each end of the harness.

Picture #1:
I assume the pink double wire with the female spade connector (with a piggyback connector) goes to the fuse box, to an accessory pin?
What is the cylinder plugged into the black connector?
What light is that big square with the circle cut out for?  I don't know which one that is.

Picture #2:
Is the socket for the maplight fixture?
Where do the rest of the connectors plug into?

[terrible one]

The cylinder is the timer for the ignition light. The light with the square plate goes over the ignition switch. I think the plate actually gets sandwiched between the ignition switch and back of the dash to hold it in place and there is a hole above where the key goes for the light to shine through. Not sure on the rest. The pink wires definitely piggyback at the fusebox, probably just on top of the pink there. The socket could be for map light or glovebox light

[Nacho-RT74]

note, that A01 Harness is for 68 or 69 ( actually 678 being small diameter ), not 70... I meant for the kind of ign switch key light to be located on dash frame, not on column. Not saying it won't work, BUT AT LEAST NOT with that ign switch light assembly

[BananaDan]

Good to know, thanks Nacho.  Does anyone know if the rest of this harness will work if I omit that piece?  Or is it totally different?