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This document must be delivered to and read by the end user and installer as it serves to provide you with the required information for proper and safe use of your STL product. Before operating this or any STL products the user and installer must read this manual all the way through. You will find important information in this manual that could prevent property damage and/or serious injury to the user and installer.
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If you have trouble call Customer Service at 800-757-2581 before proceeding. Maintenance While STL’s Light Bars are very durable, there are some things you need to keep in mind and practice to preserve the longevity and function of your Bar. •...
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ALPHA ® GRILLE / SURFACE MOUNT Wiring Diagram Wire Color Function Wire Color Function Positive Sync Red* White Black* Negative Blue Alternating Sync Programming Yellow Flash Pattern Green Steady Burn Override * Indicates a main power cable. NOTE: All cables except Negative and Sync contact +12 VDC. Specifications Voltage 12 VDC...
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ALPHA ® GRILLE / SURFACE MOUNT Extension Cable (Sold Separately) • If you are extending the main cables, just add the desired length of cable to the end of the main cables coming out of the unit. You will solder and heat shrink the wire you are lengthening from the unit to each additional length of extension cable.
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Hold for 4 seconds to toggle Random pattern mode. About Flash Patterns • All STL LED products are equipped with a non-volatile memory which will recall the last flash pattern when the product is turned on. • Follow the wiring diagram to identify the Flash Pattern wire to manually cycle through patterns.
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