28
b. Cut the wire leads to 3-3/16“ (80mm) (87). Strip 1/8” (3mm) insulation off the ends. Gently
twist the tiny strands of copper wire together. Tin the ends of the wires with your soldering
iron (88).
87
88
c. Gently twist the red and black wires together (89) Thread the twisted pair of wires through
the hole in the PCB. Make sure the holder is not resting on top of the wires (90).
d. Mount the holder to the PCB with three M3 screws (91). Drive the screws tight-but-not-too-
tight (91).
e. On the solder side, the wires go into the holes marked 9V. The red wire goes into the hole
with the square pad (+); the black wire into the hole with the round pad (92).
89
90
91
92
