Keep your stop lamps switching cleanly with the Standard Ignition Brake Light Switch SLS-84 (also written SLS84). This stoplight switch senses brake-pedal application and completes the circuit that turns on your brake/stop lights, and it drops in as a direct-fit replacement for the listed applications, including the 1978-1980 American Motors AMX, 1978-1983 American Motors Concord, 1972-1978 American Motors Gremlin, 1972-1977 American Motors Hornet, 1972-1973 American Motors Javelin, 1972-1978 American Motors Matador, 1975-1980 American Motors Pacer, 1979-1983 American Motors Spirit, 1973-1975 Jeep CJ5, 1974-1975 Jeep CJ6, 1973 Jeep J-2600, and 1973 Jeep Wagoneer — see the "Vehicles it fits" section for the full list.
- Copper alloy conductors: deliver strong electrical conductivity with low resistive losses.
- Special-design spring and contact arrangement: reduces arcing to help extend service life.
- 100% tested: verified for both mechanical and electrical switching performance.
- Brass or high-impact composite housing: built as specified for durability under real-world use.
Signs this switch may need replacing include brake lights that stay off when you press the pedal, stay on constantly, or flicker. If a failed brake light switch is the cause, this unit replaces it.
Interchange: J3215939 · S297 · 3215939 · F4820 · SL180 · 12328226 · 1972520
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
J3215939, S297, 3215939, F4820, SL180, 12328226, 1972520
Frequently Asked Questions
What does the SLS-84 brake light switch do?
It senses when you press the brake pedal and completes the electrical circuit that turns on your brake/stop lights.
Which vehicles does this switch fit?
It fits numerous American Motors models (AMX, Concord, Gremlin, Hornet, Javelin, Matador, Pacer, Spirit) and Jeep models (CJ5, CJ6, J-2600, Wagoneer). See the "Vehicles it fits" section for the exact years of each.
What are signs my brake light switch has failed?
Brake lights that don't come on when you press the pedal, lights that stay on constantly, or lights that flicker can all be signs. Diagnose the cause before replacing.
What interchange numbers does the SLS-84 replace?
It cross-references J3215939, S297, 3215939, F4820, SL180, 12328226, and 1972520.
How is this switch tested?
Standard Ignition states each unit is 100% tested to verify both mechanical and electrical switching performance.
