I see 4 problems.
1 the dash lights,
you have a dial on the left under your head light switch, then a power amplifying transistor under the dash on the right side of the steering column.
2 the turn signal. You have a bad ground, a bad bulb, or the contact in a socket is not touching the bulb.
3 and 4 may be related.
the music fading out when breaking and then coming back.
and the alternator not charging unless you are in gear and the drive line has pressure.
That really looks like a bad ground problem and could possibly cause problems 1 and 2 as well.