What harness do I need? M Case or J Case?

🚫 Stability Control / ABS Valve Fuse Locations by Year & Model

Ram 1500 • Ram 2500 • Ram 3500
(Used for Gotti’s Garage Stability Control Bypass Harness Fitment)

Below is the exact fuse cavity your truck uses for the ABS/ESC pump or valve power feed.
These are the fuses your bypass harness is designed to interrupt for full traction OFF, stability OFF, ABS OFF — off-road use only.

🟦 2009–2010 (Ram 1500, 2500, 3500)

J-Case Fuses

  • J05 – 30A J-Case
    ABS Valve / Stability Control Valve Power

  • J04 – 40A J-Case
    ABS Pump Power

Your harness targets: J05 (valves)

🟦 2011–2012 (Ram 1500, 2500, 3500)

J-Case Fuses

  • J07 – 30A J-Case
    ABS Valve / Stability Control Valve Power

  • J06 – 40A J-Case
    ABS / ESC Pump Power

Your harness targets: J07 (valves)

🟦 2013–2018 (Ram 1500, 2500, 3500 – DS/HD trucks)

M-Case & J-Case Fuses

  • F26 – 30A M-Case
    ABS Valves / Stability Control Module / Brake System Module

  • F06 – 40A J-Case
    ABS / ESC Pump Power

Your harness targets: F26 (valves)

🟦 2019–2023 Ram 1500 Classic (DS “Old Body”)

Same fuse box as 2013–2018 DS trucks.

  • F26 – 30A M-Case
    ABS Valves / Stability Control Module

  • F06 – 40A J-Case
    ABS / ESC Pump

Your harness targets: F26 (valves)

🟦 2013–2024 Ram 2500 / 3500 HD (DJ/D2/5th-Gen HD)

HD trucks kept the same layout for a long time.

  • F26 – 30A M-Case
    ABS / Brake System Module / Stability Control Valves

  • F06 – 40A J-Case
    ABS / ESC Pump

Your harness targets: F26 (valves)

🟦 2019–2021 Ram 1500 (DT – New Body Style)

ESP/ESC module feed changed on these years.

  • F29 – 40A M-Case
    ESP / Stability Control Module Power

  • F06 – 40A J-Case
    ABS / ESC Pump

Your harness targets: F29 (ESC module)

🟦 2022–2024 Ram 1500 (DT – New Body Style)

Two M-case fuses feed the ESP module.

  • F26 – 50A M-Case
    ESP Module Power

  • F29 – 40A M-Case
    ESP Module Power

  • F35 – 10A Micro
    (Logic feed, not used for a bypass harness)

Your harness targets:

  • F26 or

  • F29
    (Both are correct depending on trim — your harness will fit either one.)

🟦 2025 Ram 1500 (DT – New Fuse Layout)

The entire brake/ESC system changed to a two-module BSM system.

High-current Stability Control Valve Fuses:

  • F24 – 30A M-Case
    BSM #2 – Valve Power

  • F33 – 50A M-Case
    BSM #1 – Valve Power

Your harness targets:

  • F24 or F33
    (Both are valve feeds — future product versions may specify one.)