Help guys! I started to set up my trailer brakes today and wanted to test them. First, I took the red lead and touched it to a bat (+) & the white to a bat (-). I expected the brake to lock up. It did nothing. So I pulled the drum off and it looks like this inside: Basicly the same as anything else, just no wheel cyl and some type of pick-up looking thing at the bottom. So do I need to do something else to test it, or am I going to the trailer place to buy stuff? TIA.