Don't get stuck without the right wiring harness for your trailer or RV This <em>7</em>-<em>Way</em> Wiring Adapter transfers everything from an RV <em>7</em>-<em>blade</em> to a 6-pin round or 5-flat and 4-flat, with dual 12-volt receptacles. The 12-volt receptacles are handy for running air compressors, spot lights or other necessities. It's perfect for running TVs or stereos for tailgating as well.