Greg, Fred, Here is the wiring diagram for the US Tower MCL 100. I have also attached a photo of the new tower control box that I constructed for each of my UST HDX-589MDPL towers. J D Lambright - KF5U On Thu, Jul 28, 2016 at 1:46 PM, <Gasrenateu at aol.com> wrote: > Hell Jim, > > Please send the diagram. > > Tks. > 73,wi1p,Greg >