Time Delay

What exactly does the accessory time delay feature do? This is for a '71 Duster.

Reason I ask is because I am trying to strip out all the unnecessary circuits in my dash harness but am finding a bunch of stuff is wired into the time delay feature - marker lights, beam selector switch etc.

I got rid of the map lights, ignition lamp, glove box and ash tray lamp. There is no radio or heater. I am installing aftermarket gauges so the printed circuit board will be gone. There is a trunk light too but I have not done anything with that yet.

Can I get away with cutting out the time delay on some of these individual circuits or does it need to stay for some specific reason?

Not sure if an aftermarket harness has this feature but if it did, how would it be accomplished?

Thanks for any input.

- Greg