Give Sonic Electronix a call. Their customer service is awesome and will set you up with what you need. All of their head units come with the basic "install accessories".
'13 Ingot Silver Escape Titanium AWD
'03 Infra Red EAP SVT, #1687, 1 of 101
'04 CD Silver SVT, #877, 1 of 135 May 2011 ROTM, FF11: Best Display, Best of Show; AFN12: Best SVT, Best Audio, FJ mod pic, Finest Five, Carlisle Nifty Fifty