Stereo Power Current drop when starting

[Wikedjuggalo]

Hello all,

After wiring in my new DVD player and Raspberry Pi I have decided I would like to make it so when starting I do not lose current to the DVD player and Raspberry Pi. I have it wired to the stereo power and running through a converter to supply the correct 1A. Is there a way to modify the wiring to the stereo to avoid the current drop but maintain the Pi and DVD player.

Anyone have experience doing something similar to wiring?

Edit:

The dvd player did not come wired for power antenna, could someone elaborate on how the antenna is sent up and down? Adding a switch is not out the question but I would like to make this antenna function.