Installation Guide
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1–800–BUY–TREX
Note: Construction methods are always improving. Please ensure you 
have the most up-to-date installation instructions by visiting: 
trex. com
1
TDL-1110
TREX
®
 DECKLIGHTING™
Site Preparation and Planning
PARTS 
TOOLS NEEDED
General Information 
»  ALWAYS consult local codes before beginning a project.
»   A maximum of 60 lights can be powered by one 60W 
transformer. If your project requires more than 60 
lights, contact 1-800-BUY-TREX for transformer sizing.
»   Straight runs over 100' (30.5 m) may require larger wire 
such as 16 or 14 gauge.
»   Use Trex Transformer only. Use of any other 
transformer voids warranty. 
Planning
 Note: When designing your deck, plan locations of lights, 
power supply, timer, and dimmer. These should be accessible 
for service. 
1.   The dimmer remote will work  
in a 30' (9 m) radius of the unit.
2.   The dimmer must be installed  
in a dry location. Keep dimmer  
remote ID # in a safe place in  
case a replacement remote is  
needed.
3.   The timer must be installed vertically  
with the receptacle facing downwards  
and not reaching ground level.  
The timer must be in view of the sun  
to use the dusk/dawn feature.
A
B C D
x2x2
x2x2 x2x2 x2x2x2x2
1/4" 
(0.6 cm)
1" 
(2.5 cm)
Riser
Light
Deck Rail
Light
Post Cap
Light
Recessed 
Deck Light
A
B
C
D
Note: It is recommended to install 
wiring before decking and railing have been installed. 
Do Not run wires between joists and deck boards.
Note: Avoid railing brackets and locations for 
deck rail lights when running wires up posts. 
GFCI 
Outlet
Timer
Transformer
To Lights
Dimmer
(Optional)
Lighting and Wiring Overview




