Okay first let me setup up the scene for you guys/gals. I have a 94 E500 and I am about to do some work on my car stereo. I am replacing my entire rear deck with a new rear deck custom made for a W124 with four 8 inch woofers, two 4 inch Midranges, and two 1 inch tweeters. But my question is not about car audio! Here is my question. The new rear deck I am putting in has cut outs for the headrests, can I put my headrest back in and use the switch up on the console or will they only be manual headrest? I am trying to maintain using the switch up on the console. Also, I can get a cutout made for the rear sunshade, but I need to know if I can keep using the switch on the console? If I can't keep the rear sunshade I won't cry about it, but the rear headrests I must keep!!! Any thoughts would be greatly appreciated.

Thanks,
Shanta