Standard Ignition MR-10 Brake Light Relay

Brake Light Relay for Classic GM Trucks and Vans

The Standard Ignition MR-10 is a 12-volt brake light relay built for older Chevrolet and GMC applications that need dependable electrical switching. It uses a 3-blade male terminal design with a mounting bracket included for a secure installation in the original location.

Fits 1972-1978 Chevrolet and GMC vehicles including C10, C20, C30, G10, G20, G30, K10, K20, K30, P10, P20, P30, Jimmy, Blazer, El Camino, and related van and Suburban applications.

Key Features

• Standard Ignition MR-10 brake light relay
• 12-volt electrical relay for brake light circuit control
• Male connector and male blade terminals
• 3-terminal configuration for direct-fit service
• Mounting bracket included
• Composite housing built for harsh under-hood temperatures
• Brass or copper contacts used where specified for wear resistance

Detailed Description

The MR-10 is a replacement brake light relay for classic Chevrolet and GMC trucks, vans, and utility models from the 1970s. Standard Ignition manufactures this relay with quality-controlled materials and production processes, including composite housings and specified brass or copper contacts, to support reliable electrical performance in demanding engine-compartment conditions. This part cross-references Gates 19830 for the same application.

Use the Standard Ignition MR-10 when servicing brake light relay circuits on vehicles such as the Chevrolet C10, GMC Jimmy, or Chevrolet El Camino. The part number MR-10 is also a useful reference when matching an OE-style relay for 1972-1978 GM light-duty and van applications.

What It Helps Fix

• Brake lights that do not activate consistently
• Intermittent relay operation in the brake light circuit
• Electrical switching issues caused by worn relay contacts
• Heat-related relay failure in under-hood locations
• Fitment problems when replacing an aging original relay

Installation Notes and Tips

Verify the vehicle uses a 12-volt brake light relay with a 3-blade male terminal layout before installation. Confirm connector orientation, bracket mounting points, and terminal condition against the original part. For best results, inspect the surrounding wiring and terminals for corrosion or heat damage before installing the MR-10.

Quality Assurance

Standard Ignition manufactures this relay under TS16949 and ISO9001 certified quality systems, with process control from component selection through final assembly. The MR-10 is built to meet stringent quality requirements for the correct vehicle application.