Turn over the board so that
it sits on the standoffs.
[Bulbdial Assembly Guide]
[22]
STEP 17: Insert first ring of LEDs
Insert the LEDs, one at a time,
into the pairs of regular holes on
the back side, facing inwards as
shown.
Do not
solder them yet.
Add all 30 blue* LEDs.
(*For monochrome kit, just “30 LEDs,” of course.)