Installation Guide
23
LIGHTING
NOTE: Construction methods are always improving. Please refer to www.trex.com for the most up-to-date installation requirements.
HOW TO INSTALL TREX WEDGE DECK RAIL LIGHT
PARTS
A
x3x3
Wedge Deck Rail Light
(includes 5ft male-to-male wire)
9/16" x 6" or Longer
(14 mm x 152 mm)
TOOLS NEEDED
»   5ft, 10ft, 20ft, 40ft, and 60ft connection/extension 
wires sold separately (these are male-to-male 
connection wires).
HELPFUL TIPS 
»  Leave slack in wire to make fi xture terminations.
»   Deck rail light work well at changes in levels of a 
deck—at the top or the bottom of the stairs, or in 
conjunction with post cap lights. 
»   Splitters should be used at each post that has 
lights and depending on spacing in between each 
riser and recessed light.
»   Cap all unused female connections with caps 
provided or weather-resistant silicone to prevent 
water damage or corrosion.
»   The splitter is cross-linked so there is no specified 
plug for lights versus lead wires.
»   Leads attached to each light are approx. 
5.5' (1.67 m) in length and have male terminals 
to plug into splitter.
»   Use a separate dimmer control for each light type 
for maximum control.
»   It is recommended to have power source on when 
installing lights to ensure all components work.
Installing Post Lamps 
NOTE: Instructions shown below are for new deck 
installation and are shown BEFORE railing system has 
been installed.
1.    Before attaching post to deck, locate placement of 
post and mark desired bolt locations.
2.   Using a straight edge, mark an “X” between the four 
bolt locations.
3.   Using a 9/16" (14 mm) x 6" (152 mm [or longer]) drill 
bit, drill a diagonal hole through the decking and 
blocking. Ensure that the angle will allow wire to not 
be pinched by support plate under blocking (if using 
Trex ALPOSTHWDECK mounting kit).
4.   Locate placement of post lamp. Mark entry point of 
the wire.
5. Drill 9/16" (14 mm) hole 
where wire will enter 
post.
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