How to Mount Solar Cap Lights on Wood, Vinyl, and Plastic Deck Posts
Step 1: Measure Your Deck Posts for Compatibility
[IMG: Step 1: Measure Your Deck Posts for Compatibility]
Before mounting your lights, measure the actual outer dimensions of your fence or deck posts using a tape measure. Standard posts vary depending on material. Wooden posts often measure true sizes like 3.5"x3.5" or 5.5"x5.5", whereas vinyl and plastic sleeves may measure true 4"x4" or 5"x5". Check our sizing overview in [the main guide] to confirm fixture dimensions.
Step 2: Select and Attach the Correct Base Adapter
[IMG: Step 2: Select and Attach the Correct Base Adapter]
Unpack your 6 pack of Solar Post Cap Lights. Each unit measuring 5.8 x 5.8 x 3.54 inches comes with different sizes of bases designed to fit standard true size 3.5"x3.5", 4"x4", 4.5"x4.5", 5"x5", and 5.5"x5.5" wood, vinyl, or plastic post caps. Select the matching base adapter from the box and align it directly over the top of your post.
Step 3: Activate the Solar Battery and Sensor
Remove the protective solar housing to access the internal battery compartment. Ensure the included 1000MAH NI-MH AA rechargeable battery is firmly seated. Activate the automatic on/off sensor switch if toggled off for shipping. Test the circuit by temporarily covering the top solar panel with your hand to confirm that all 8 warm white SMD LEDs illuminate at their standard 15 lumens brightness.
Step 4: Secure the Light Fixture to the Post
Place the light fixture onto the chosen base adapter positioned over your post. Using the provided stainless mounting hardware, secure the plastic cap to the post. Ensure the fixture is mounted in a location that receives full and direct sunlight for 6-8 hours daily to guarantee an optimal full charge. Once secured, the IP44 waterproof structure protects the unit against rain, snow, frost, or sleet across its 30,000 hours lifespan, supported by [warranty period] not specified coverage.
Read the full guide: Low Voltage vs Solar Deck Lighting: Complete Buyer's Guide