Genssi 30/40 AMP Auto LED Light Bar Relay Wiring Harness SPDT 12V 40A (10 Pack) Genssi 12V 5 Prong Relays with 5 Prong Sockets 30A / 40A for many applications - The contact colors are Yellow (common); Red (normally closed); and Blue (normally open) Heavy Duty Wire and construction 16 Gauge 1ft Long No installation instructions provided Includes 10 relays + 10 socket wires