Install
a Switch
Cut
a hole in the top cover. Follow the instructions provided
by the swicth manufacturer. Some toggle switches use a single
round hole. Make sure that the switch is not too deep to short
circuit the PCB or make installation physically impractical.
Fig. 2 Square switch installed in WRT54G
Square
switches [Fig.2] need a square hole. Mark off the square area
for the hole at desired location with an all surface marker.
Drill a small hole in the center of the marked area. Pass
the coping saw through the hole and tighten it. Cut the piece
out with a saw. A small flat file comes in handy to trim down
the edges once you've cut a hole. Be careful not to overcut.
If you cut more than necessary your switch may be loose and
will require gluing. The switch should snap into the hole
(and stay in it) without use of force.
Solder
Connections
Solder
all the wires as indicated in the diagram [Fig. 3]. Thread
suitable size shrink tubing on the wires prior to soldering.
Once soldered use a heat gun to shrink the tubing. The idea
is to insulate all exposed wire pieces. Any exposed wire can
cause a short circuit. Alternately, you can use electrical
tape.
When
connecting the fan pay attention to proper polarity. You want
to have the fan suck the air out of the enclosure. Do it the
easy way. Connect the power supply and temporarily attach
the wires to the fan. If the air is not blowing out of the
enclosure just reverse the polarity and soldier all connections.
Fig. 3 WRT54G cooling fan wiring with optional switch
1,
2,
3, 4,
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