5 pin. 5-Pin Connector. A/C Clutch Relay. Accessory Safety Relay. Color-Black. Engine Cooling Fan Motor Relay. Fog Light Relay. Horn Relay. HVAC Blower Motor Relay. Optional. Relay for accessory power. Starter Relay. Vendor:ACDELCO. ASSEMBLY - MULTIUSE. ABS. Accessory Power. Accessory Safety. AIR CONDITIONING (A/C) Clutch. Engine Cooling Fan Motor. Fog Light. Fuel Pump. Horn. HVAC Blower Motor. Starter. WINDOW. Included with: Fuse & relay box, Junction block.