Standard Ignition HR-118 Horn Relay

Horn Relay for Dodge Trucks and Ramcharger

Standard Ignition HR-118 is a 12-volt horn relay built for select Dodge truck and Ramcharger applications from the mid-1970s through 1979. It uses a rectangular connector, 3 male blade terminals, and includes a mounting bracket for a secure under-hood installation.

Key Features

• 12 V horn relay for electrical system service
• 20 amp amperage rating
• Rectangular connector shape
• 3 male blade terminals
• Mounting bracket included
• Composite housing helps protect the relay in harsh under-hood temperatures
• Brass or copper contacts are used where specified for wear resistance

Product Details

The Standard Ignition HR-118 is an OE-style horn relay engineered for reliable switching in vehicles that use a 12-volt relay circuit. Standard Ignition manufactures this part under controlled quality processes, with TS16949 and ISO9001 certified plants supporting consistent fit and construction. The HR-118 is a practical replacement choice for Dodge D100, D150, D200, D300, Ramcharger, W150, W200, W300, B100, B200, B300, and W100 applications listed in the fitment data. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Fix

• No horn operation when the relay has failed
• Intermittent horn function caused by worn relay contacts
• Electrical switching issues in the horn circuit
• Heat-related relay problems in the engine compartment
• Fitment issues from damaged or incorrect connector style

Installation Notes and Tips

Verify the connector shape, terminal count, terminal gender, and voltage before installation. Match the existing mounting location and bracket style to the vehicle’s original relay setup. For fitment-based searches, this part fits 1975-1979 Dodge D100, 1977-1979 Dodge D150, 1975-1979 Dodge D200, 1975-1979 Dodge D300, 1974-1979 Dodge Ramcharger, 1977-1979 Dodge W150, 1975-1979 Dodge W200, 1975-1979 Dodge W300, 1975-1977 Dodge B100, 1975-1977 Dodge B200, 1975-1977 Dodge B300, and 1975-1977 Dodge W100. Standard Ignition HR-118 should be installed using the vehicle’s original relay configuration and wiring layout.

Quality Assurance

Standard Ignition builds this relay with composite housing protection for under-hood conditions and specified brass or copper contacts for extended wear. The brand’s manufacturing process is supported by stringent quality requirements and certified production facilities to help ensure the right part for the right vehicle.