I (almost) successfully had a local Sound Advice put in a Pioneer DEH-P660 head unit in to replace my aging and failing Becker.

They ran new wire from the head unit to my 4 Rainbow shelf-mounted speakers. We did not bother to figure out how to drive the door speakers. I had an aux wire run for my iPod and everything is great.

Except that the head unit does not control the antenna. Sound Advice says the wire from the head unit that terminates at the antenna supplies power when the unit is switched on. But the antenna does not go up. Am I to understand from this thread that I need to run a new wire from the head unit to the antenna to control the antenna? Anything specific I can tell Sound Advice to make this work? Thanks in advance.