Was wondering if someone could assist me with a brake light problem on my '97 Land Yacht DP? Noticed that the only brake light function working on the DP is the center B.L. unit above the rear access panel. The outboard light units have no brake light function- the turn signal, running light and B.U. light modes all work. Also, the recepticle for the trailer harness indicates the same. Before I spend hours chasing loose wires, missing wires, no wires, maybe someone has experienced this problem? Thanks!