Phone Terminal Block Wiring Diagram - Turnout Control. For Information On Wiring turnouts, Go To the Section On Wiring Turnouts. For Introduction to Turnout Control Options, Go To DCC for Beginners. SUGGESTION #14-2: Use DCC Controlled Turnouts and Eliminate Control Panels! Call me a gadget hound, but this is one of my big attractions to DCC — you don't need any control panels!. Optional Value Change Advisory. While recently building two units I discovered that modulation of the filter when using the integrated square wave from the LFO could be improved (deepened) by changing the value of R56 from 75K to 20K.. Roadmaster Tow Bar Wiring - RM-154. Diode Kit allows you to use your vehicle's tail lights and wiring system while preventing feedback from your RV. 4-Pole flat loop included to connect RV to towed car..