Ones I could fathom today:
12d Worn out, as are vehicles in Detroit (5). Tired?
5d. Person behind majority harms morale etc (9). So it's “latecomer”. "Person behind" is the definition, "harms" is the anagram indicator, and "morale etc" is the anagram. What's the word “majority” doing in the clue?
12d...although it's possibly unsuitable, bar top two fifths (6). No idea on this one.