We did this years ago when the Gen3 first came out. 6x LP6 linked together. The amber are on one switch and whites are on another. This is all being controlled with a SwitchPros/sPOD system (I forget which one the customer had).
Fast forward to today where we actually offer kits like this with daisy chain pigtails and harnesses. We already have our LP4 kits on our website. We make a universal bracket out of stainless steel (powder coated black) now adays for setups like this. But this was something we did years ago before we had a system created.
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You can check out our LP4 kits available here:
https://www.4x4truckleds.com/led-light-bars/baja-designs/lp4-linkable-light-bars/
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You can see our LP4 brackets on the sides that we make. We'll be doing the same thing with LP6 as well