I have aWhelen Legacy GS2 RRRR Once I see it working it will be for sale or trade for an amber light. Finally got a pic of the wires up.What type of lightbar do you have, or what type are you getting?
The WCCP is a WeCan Control Point and is only needed if you get a WeCan controlled lightbar. Whelen sells both Low Current lightbars as well as serially controlled WeCan lightbars. The wires you saw on the WCCP were all just low current trigger wires that would activate features you'd program into the lightbar using Whelen's software. It sounds intimidating, but it's not too bad to figure out... and you have plenty of people here that are masters of the trade.