I'm going to install Rail Pro in the LGB F7 A&B units, I just talked with Don at RSC and he said that it would be a single board install (A unit) as the B unit is not powered, but I can put speakers in both units and all will work as the single board can power two speakers. I do remove all the LGB systems in both engines and I do remove the brass contacts in the trucks, I do not want any track power to these engines, ie. I will be battery power 100%. I replace all lamps in the engines with LED's, 12v with resistors to lower the lights brightness, except for the headlamps not as much resistor reduction, just looks much better and less draw on the battery. As far as a wiring diagram goes the Rail Pro diagrams are pretty simple to follow and the boards are a simple hookup, I'm half dangerous with electrical work, but I found it rather easy to do. I do make my own MU cords as needed from a kit I purchased on eBay. All being said, I'm a modeler first and a runner second, but I do want perfection in both running and my modeling. Rail Pro is defiantly the best system around to go with.
trainman