From: "O.B." 
Newsgroups: alt.home.repair misc.consumers.house sci.engr.lighting
Subject: Replacing toggle switch with programmable switch for flourescent
 light
Date: Fri, 24 Sep 2004 21:05:40 -0500

Two questions:

I'm attempting to replace a simple toggle switch with a programmable 
switch for an outdoor 8' fluorescent light.  The simple toggle switch's 
wiring is shown below.  What is black wire used for in the fluorescent 
light?


        +---------+
   +----|  Light  |----+
   |    +---------+    |
   |         |         |
White     Black      Red
   |         |         |
   |         |         |     +----------+
   |         |         +-----|          |
   |         |               |  Switch  |
   |         |               |          |
   |         |               |          |
   |         +---------------|          |
   |         |               +----------+
   |         |
White      Red
(GND)     (HOT)

If this helps any, I connected a multimeter to the black and red wires 
of the light and measured a resistance of 4.2 ohms.

        +---------+
   +----|  Light  |--------+
   |    +---------+        |
   |         |             |
White     Black          Red
   |         | ___________ |
             +-|  meter  |-+
               -----------

The new programmable switch has three wires.  Is the following the 
correct way to hook it up?


        +---------+
   +----|  Light  |----+
   |    +---------+    |
   |         |         |
White     Black      Red
   |         |         |        Switch
   |         |         |     +-----------------+
   |         |         +-----| Load (Blue)     |
   |         |               |                 |
   |         +---------------| Line (Black)    |
   |         |               |                 |
   +-------------------------| Ground (White)  |
   |         |               +-----------------+
   |         |
White      Red
(GND)     (HOT)


PS  The manual for the new switch is:
     http://www.aubetech.com/english/manuels/ti035a.pdf