Mercury - VesselView 7 & 70x Video Input Cable Dual Video Source Harness 8M6003460. Overview. The Mercury VesselView 7 & 70x Video Input Cable (8M6003460) lets you add up to two live video sources directly to your VesselView display. Plug in cameras to keep an eye on the swim platform, the bilge, or even the galley below - all from your screen at the helm. It's an easy way to expand what your VesselView can do, whether you're docking, towing, or just keeping a better eye on what's happening arou