YL-388-S 12V/30A 4-Pin Automotive DC Relay, 1 Pack Replacement for Fog Driving Light Wire Harness, Auxiliary Light Accessory Power Circuit Relay with Mounting Tab for 12V Vehicle Systems

["[MODEL & SPEC CHECK] Includes 1 YL-388-S relay marked 12V/30A with 4 blade terminals, black plastic housing, and molded mounting tab. Match the model marking, 12V voltage, 30A rating, 4-pin blade layout, connector cavity shape, and relay footprint before ordering.","[FOG LIGHT HARNESS USE] Intended for 12V automotive fog light, driving light, auxiliary light, light bar, and accessory wiring harnesses that call for the same YL-388-S 4-pin relay style. Circuit use depends on your harness or fuse box diagram.","[4-PIN LAYOUT CHECK] Made for 4-pin relay sockets only. Do not use for 5-pin relays, changeover relays requiring an 87a terminal, or sockets with different blade spacing, orientation, locking shape, or current rating.","[12V SYSTEM COMPATIBILITY] Compatible with 12V vehicle electrical systems and replacement wiring harnesses using a matching YL-388-S 12V/30A relay. No specific year, make, or model fitment is claimed; verify by the relay marking and socket layout.","[MOUNTING TAB DESIGN] Integrated mounting tab with round hole helps secure the relay near an auxiliary light harness, relay panel, or protected mounting point. Keep the relay away from direct water splash, excessive heat, and loose wires.","[REPLACEMENT DIAGNOSIS] May help restore circuit operation when testing confirms a failed, missing, overheated, or corroded relay. This relay does not guarantee repair of switch, fuse, lamp, ground, wiring, or control-module problems.","[INSTALLATION NOTE] Disconnect battery power before service, pull the current relay straight out, inspect the socket for melted plastic, corrosion, moisture, or loose terminals, then install only after all specs and pin layout match.","[COMPATIBILITY NOTE] Part numbers and model names are used only to help verify compatibility. Check your wiring-harness instructions, fuse box diagram, owner manual, or service manual before ordering."]