Reminds me of the story about the guy who got a new rig and went through the trouble of installing the body remotely with the detachable head in the passenger compartment. With everything done, he went to make final connections to use it--and found that the mike didn't have a plug-in on the remote head. So he went and removed the unit and remounted it under his dash, got everything together and tried setting it up.
Seems he didn't understand the menu system, so he went and got the bag with the paperwork and manuals--and found the remote mike connector cord in that bag!
Moral: ALWAYS look at the manual FIRST!