The schematic of the delay circuit shown above is
the one provided with HiViz.com kits prior
to version 10. C represents the 0.47-µF capacitor.
Note that the negative (left) side of this capacitor
connects to ground (b). This conflicts with the online
assembly instructions which show the negative side of
the capacitor connecting to pin 3 of the 556 timer (Row
25, Column j). We've tested the delay unit in both configurations
and have not noted a difference in operation. However,
if you prefer to connect the 0.47-µf capacitor as shown
in the schematic above, do the following.
Insert the positive lead of the capacitor into Row
27, Column i.
Insert the negative lead of the capacitor into Row 29,