Standard Ignition SLS-138 Brake Light Switch

Brand Standard Ignition SLS-138
Color Black, Silver,White
Connector Gender Female
Finish Aluminum, Brass, Plastic
Terminal Gender Male
Terminal Type Blade Terminals
Fits Subaru, Daihatsu, and Plymouth · 11 vehicles

Screw-in design. Installs with a threaded attachment for a secure fit.

Wiring harness included. Saves time by providing the needed electrical connection.

Metal and plastic construction. Combines durable materials for dependable switch operation.

Cross-references Standard Ignition SLS-138, 682140140 and 8434087101000 for the same application. See all 6.

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Brake Light Switch for Subaru Standard Models

Standard Ignition SLS-138 is a 12-volt brake light switch built for Subaru Standard applications from 1977 through 1987. It uses a screw-in attachment method, a rectangular single connector, and a wiring harness included for a direct electrical connection.

  • Brake light switch for Subaru Standard vehicles
  • 12-volt electrical design
  • 2 terminal quantity with blade terminals
  • Female connector with male terminals
  • Screw-in mounting style with hex nut hardware
  • Black, silver, and white finish with plastic and metal construction
  • Wiring harness included

Detailed Product Overview

The Standard Ignition SLS-138 brake light switch is a direct-fit electrical replacement for Subaru Standard models that use the specified connector and mounting style. It is built with a plastic and metal body, aluminum, brass, and plastic finishes, and a rectangular connector layout to match the original brake switch configuration. This part number is also referenced as SLS-138 in interchange listings, and it cross-references JA4228 for the same application.

What This Brake Switch Helps Resolve

  • Brake lamps that do not illuminate when the pedal is pressed
  • Brake lights that stay on after pedal release
  • Intermittent brake light operation caused by switch wear
  • Electrical connection issues at the brake pedal switch circuit
  • Replacement needs on Subaru Standard models with the correct 2-terminal connector

Installation Notes and Fitment

Compatible With 1977 Subaru Standard, N/A, 2 Terminal Connector. Compatible With 1978-1982 Subaru Standard, N/A. Compatible With 1983-1984 Subaru Standard, N/A; not compatible with vehicles equipped with cruise control. Compatible With 1985-1986 Subaru Standard, N/A. Compatible With 1987 Subaru Standard, N/A; not compatible with vehicles equipped with cruise control.

Before installation, confirm the connector shape, terminal count, and screw-in mounting style match the original switch. Verify the vehicle is not equipped with cruise control where noted in the fitment data. The included wiring harness supports the electrical connection during replacement.

Quality Assurance

Standard Ignition supplies this brake light switch as an OE-style electrical replacement for Subaru Standard applications. Part number SLS-138 is listed with direct interchange references for application matching and fitment verification.

This part fits 11 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1987SubaruStandard——N/ANot compatible with vehicles equipped with cruise control.
1986SubaruStandard1.6LH4N/A—
1985SubaruStandard——N/A—
1984SubaruStandard——N/ANot compatible with vehicles equipped with cruise control.
1983SubaruStandard——N/ANot compatible with vehicles equipped with cruise control.
1982SubaruStandard——N/A—
1981SubaruStandard——N/A—
1980SubaruStandard——N/A—
1979SubaruStandard——N/A—
1978SubaruStandard——N/A—
1977SubaruStandard——N/A2 Terminal Connector
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — SLS-1386821401408434087101000JA4228SL844SSSL2032