Replacing toggle switch with programmable switch for flourescent light

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
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