4Pcs Multipurpose Relay 12088567 8567,12V 20A 4-pin Fog Lights Headlights Relay Compatible for Buick Cadillac Chevrolet GMC Pontiac Ecm Flashers Strater Ignition Horn

Based on the part number and description, here's a clear breakdown of Relay 12088567 (also known as 85578 or 8567):Type: Standard Automotive ISO Mini RelayFunction: Multipurpose Switching Relay.Key Specifications:Voltage: 12 Volt DC.Terminals: 4-Pin (SPST - Single Pole Single Throw, Normally Open).Pin Configuration (Standard ISO):85: Coil Ground (-)86: Coil Power (+)87a: Not Present (This relay doesn't have a Normally Closed contact)30: Common Contact (Input - Power Source)Common Applications: This relay is compatible with or designed to fit circuits controlling:Fog LightsHeadlights (Often High Beams or specific circuits)HornStarter / Ignition CircuitsFuel Pump (ECM/PCM controlled)Flashers (Turn Signals, Hazard Lights)Cooling FansVarious other accessories and engine management functions.Compatibility: Widely used across many General Motors (GM) vehicles, including:BuickCadillacChevroletGMCPontiacOldsmobileSaturnHummer (H2, H3)Saab (GM-era)Location: Found in the underhood fuse/relay box(es) and sometimes interior fuse panels. It's a very common relay in GM vehicles from the late 1990s through the 2010s (and often interchangeable within that period).Important Notes:"Multipurpose": While marketed for specific uses (Fog, Headlights, Horn, Starter, ECM/Flashers), this is fundamentally a generic switching relay. Its actual function depends entirely on which circuit it's plugged into within your specific vehicle. A physically identical relay might control the horn in one car and the fuel pump in another.Interchangeability: This relay design is an industry standard . make functionally identical relays that will work in the socket designed for part number 12088567/85578/8567.If you're troubleshooting or replacing:Identify the Faulty Relay: Refer to your vehicle owner's manual or the fuse/relay box diagram to locate which specific circuit (e.g., Horn, Fog Lights, Fuel Pump) this relay controls in your car.Swap Test: Often the easiest way to test is to swap this relay with another identical one in the box (e.g., swap the horn relay with the fog light relay). If the problem moves, you've found the bad relay.Check Socket & Fuse: Before blaming the relay, ensure the fuse for the circuit is good and that there are no signs of corrosion or damage in the relay socket.In short: Relay 12088567/85578/8567 is a standard 12V 4-pin ISO mini relay widely used as a generic switching component for lights, horns, ignition, flashers, and engine management systems in many GM vehicles. Its specific function depends on where it's plugged in.

• Direct Replacement & Wide Fitment: Perfectly replaces OE part #12088567 , 2135170, 13500114, 13502679, 13502752, 19115080, 19115083, 8120885670, 8121936110, 135001140, 8153934120, 8191150800, 8191160570, 9522038000, 96190187, RY1847, RY601T. Guaranteed compatibility with Buick, Cadillac, Chevrolet, GMC, Pontiac & more.
• Rugged 20A SPST Reliability: Engineered for demanding automotive use. Handles up to 20 amps with Single Pole Single Throw (SPST) switching for dependable performance in critical circuits like starters, horns, fuel pumps, and flashers. (Highlights key spec & durability)
• Extreme Temperature Resilience: Built to withstand the harshest under-hood environments, ensuring year-round reliability in any climate.
• Effortless Plug-and-Play Installation: Features standard plug-in mounting. Replaces your faulty relay in seconds – no wiring modifications needed. Get your lights, horn, or starter working fast!
• Essential Multipurpose Solution: Trusted critical component for headlights, fog lights, ignition/starter systems, horns, ECM controls, and flashers. Restore vital functions with a proven, high-quality relay.