P17) Winged Wire Connector Blue (100pc's/bag) - Lampsone
IDEAL 454 Blue Wing-Nut Wire Connectors (25-Pack) 30-454P - The Home Depot
DryConn Large Waterproof Wire Connectors - Aqua/Blue (6-Pack) | Outdoor/Underground | UL Listed | Weatherproof | 600V Rated in the Wire Connectors department at Lowes.com