Whelen Light Bars

Firstresponder25

New Member
May 8, 2026
6
NH
I picked up a couple of older Whelen Edge and LED Liberty bars the other day. Tried hooking them up to a converter and would not work. Tried hooking them up to a car battery and battery charger with still no luck. Looking for suggestions.
 
Most Whelen lights require constant power to primary red wire + and the ground typically black. The other wires in the bundle are typically trigger wires for specific functions. Best advice is to try and pull a model number and lookup a wiring schematic, so you do not accidentally blow something up .
 
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So as I said previously the Red/Black wires will energize the bar when connected to a power supply. Functions are triggered by applying voltage to the smaller bundle of wires individually to perform other functions. I think I have a YT video on a liberty bar I was working on.. try this..
 
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I have tried just that, Red/Black wire, then the smaller ones with no luck. Unfortunately, your video does not show how or which wires you hooked up.
I would use the video as a reference, I do talk about wiring colors and what they did during the video. However, with that in mind.. your light may not be wired the exact same way. Which is why I said find a wiring diagram for your specific model. For the rest, I will leave to the Whelen folks here.

I hope you get it working..
 
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