85md

I have a 2004 F150 crew can lariat. I bought a Kenwood DDX374BT to install. I want to retain the steering wheel controls. I bought the crutchfield adapter/harness to maintain controls. I am not so sure which wire to hook up for the control. I am trying to post pics, but for some reason they won’t post. Basically, I have a volume and mem button for radio controls. Options are 4 button vol +, vol-, next, mode. Or 4 button vol-, vol+, next, media. Not sure which to use?? . I am trying to post pic with my iPhone, any help posting pics??