Standard Ignition HR-117 Horn Relay

Horn Relay for Classic GM and Jeep Applications

Standard Ignition HR-117 is a 12-volt horn relay built for classic vehicle electrical systems that need reliable horn circuit switching. It uses a 3-blade male terminal layout with a flat or rectangular connector shape and includes a mounting bracket for secure installation.

Key Features

• 12 V horn relay with 20 A amperage rating
• 3-terminal blade design with male terminals
• Flat and rectangular connector shape
• Mounting bracket included
• Composite housing for protection in harsh underhood temperatures
• Brass or copper contacts used where specified for wear resistance
• Manufactured under TS16949 and ISO9001 certified processes

Detailed Description

The Standard Ignition HR-117 is a replacement horn relay for a wide range of classic Chevrolet, GMC, Cadillac, Pontiac, Buick, and Jeep vehicles. It is built to handle horn circuit switching in 12-volt systems and is a practical choice for restorations and electrical repairs on models such as the Chevrolet Bel Air, Chevrolet Impala, GMC Jimmy, and Jeep CJ5. The HR-117 part number is also referenced in interchange listings for related OE-style applications, including Carlson 16127.

Standard Ignition uses composite housings to help protect the relay from severe underhood conditions, while specified brass or copper contacts support extended service life. The HR-117 is a direct-fit style horn relay for many classic GM applications, including Fits 1970-1972 Chevrolet Blazer, N/A; Fits 1967-1972 GMC G15/G1500 Van, N/A; and Fits 1957-1962 Chevrolet Bel Air, N/A. It also serves other vintage applications such as the Pontiac GTO, Cadillac DeVille, and Chevrolet El Camino with generator-equipped notes where listed.

Common Repair Uses

• Restores horn operation when the relay no longer switches power correctly
• Addresses intermittent horn function caused by worn relay contacts
• Replaces a damaged or heat-affected relay housing in the engine bay
• Helps correct horn circuit issues on classic GM and Jeep vehicles
• Supports restoration work where the original 3-blade relay layout is required

Installation Notes and Tips

Verify the terminal count, blade style, connector shape, and 12-volt system before installation. The HR-117 includes a mounting bracket, but hardware is not included. Confirm the vehicle’s horn relay location and compare the existing connector to the 3-blade male terminal layout before connecting. For fitment-sensitive restorations, match the application notes carefully, especially on 1967-1971 GMC and Chevrolet models with 3 blade term. references.

Quality Assurance

Standard Ignition manufactures this relay under stringent quality requirements in TS16949 and ISO9001 certified facilities. The HR-117 is produced with controlled component and finished-product processes to support consistent fit and function across listed applications.