Cryptic crossword No 3,398

Across

1. Exact location of 13's guiding light (2,3,4)
2. *One of nine at university arrested by police (5)
3. Assistant regularly uses eBay, showing disregard (4,2)
4. *One of nine (boy) illuminated form of Buddhism (7)
5. *Malfunctioning satnav restricted courier (5)
6. Merry one is glad to get by (9)
7. Resting general bitten by snake (6)
8. *Reindeer leader resolving hold-up (7)
9. Xanthe, ultimately leaving cool praise, reviewed citadel (9)
10. Axe beset with clear diamonds imposed too great a strain (9)
11. Receiver of sound hairpiece finds insect (6)
12. Yapping essentially spreads – somehow slides – and scatters (7)
13. Multi-act show's criticism is heard (5)
14. Say, king's devotion when replacing leader (7)
15. *One of nine comes Thursday instead of Sunday (5)
16. *One of nine: academic nerd mostly (6)

Down

1. Appropriate, say, being taken into A&E for trifle (9)
2. Produce problem children (5)
3. *One of nine, archdeacon, carries single cross (5)
4. Ringing of a bell (welcoming first of December) could come from a bike (5)
5. Y's successor meets current team breaking code for white compound (4,5)
6. No – put away and tidy up! (6)
7. End kinda irks buff of Sherlock Holmes at first (6)
8. Wasting disorder observed when Darcy emptied small cup (9)
9. Yankee ignored trite story about coffee (9)
10. Expose to ridicule: tablet (old, vacuous remedy) (7)
11. *One of nine, the German, is tackling tree (6)
12. *One of nine quietly ran by cold queen (7)
13. Prepared herb tea? Take in the air (7)
14. Hurricane maybe part of tempest or monsoon (5)
15. *One of nine raced madly around Pole (6)
16. Arrangement of red LEDs displaying 10 perhaps (7)