I have a Whelen liberty SX8(6/07) controlled by a PCC8R.The last time I used the bar when I turned on the front all the lightheads including the corners were dim.When I turned on the back and the front only the left side of the bar would light up which were dim also.Bar is connected to the battery through a 40a fuse block and ground is connected straight to the battery.Not sure whats going on here....any ideas?