I have a Whelen Justice bar. I hooked up the wecan and cannot get anything to work. What could i be doing wrong? Is there anyway to check the control board in the bar to make sure its good, besides checking the fuses?
May I suggest using that battery charger to charge a 12 volt battery, and then using that battery to run your electronics? I learned this lesson the hard way; hopefully you don't have to.
Did the WeCan control point come with the bar or did you buy it separately? It is possible that the control point is not programmed for that style of bar or programmed at all. Too many variables here with the limited info and only one photo of the setup as you are trying to use it.