The X-6065 adapter cable plugs in line with the existing vehicle wire harness at the main light switch and allows the front amber marker lights to turn on with the headlights (the way a normal commercial car or truck works). The adapter cable does not affect the blackout lights or the parking light mode (they continue to work as normal). No modification to the vehicle's wiring required; adapter simply plugs in.
Works with all M series vehicles using the MS51113-1 three lever light switch.
Cable is made in USA from mil-spec components. Wire is 14 awg M13486/1-5.