Profile: Marinco SWD manufactures wiring devices for critical electrical connections. Our products are tough, precision-made, and field-experienced to meet the demands of your passion-in-motion, whether it rides across the water, down the highway, up a snow-covered trail, or through the mud. Our products range from the highest-quality specification grade NEMA and California Standard (CS) wiring devices, locking 12-volt DC plugs and receptacles, rugged Stage Pin, and Cam-type high-amperage in-lines and panel mounts, as well as three stage, electronic battery chargers, and battery isolators that are waterproof, shockproof and corrosion proof.