- Place the three switches through the holes, as shown in Figure 11-16,
and secure them to the box with the nuts included with the switches. - Feed the LED socket through the hole in the front of the box. Slip the
LED into the socket from the inside of the box, and then slip the
bottom half of the socket over the leads and tighten to secure the LED. - Connect one black and one red 6" wire to the LED and solder them.
The secured and soldered LED is shown in Figure 11-17.
The red wire must be connected to the longer of the LED leads. After the
wires have cooled, wrap them in electrical tape to prevent the leads
from shorting.
Heed all the safety precautions about soldering that we talk about in
Chapter 2. For example, don’t leave your soldering iron on and unat-
tended. And for heaven sakes — don’t drop it in your lap when it’s hot!Figure 11-16:
Transmitter
box with
switches
installed.256 Part III: Let There Be Light