2020 Ram 1500 — Fuse Box Diagram & Amperage

Quick answer

• Under-hood: Power Distribution Center (PDC) next to the battery on the driver side. Houses most powertrain, lighting, ABS, blower, A/C, and trailer-tow fuses and relays.
• Interior: Body Control Module (BCM)/fuse panel at the left dash kick-panel (behind the access cover at the end of the dash or low on the driver’s kick panel). Handles cab electronics like radio/infotainment, airbag, HVAC controls, and power outlets.
• Trunk/Cargo: No separate trunk/cargo fuse box on the 2020 Ram 1500. Trailer-tow and bed lighting circuits are fused in the under-hood PDC. Some trims add inline/aux fusing near the battery or behind the rear seat for options (power running boards, air suspension, RamBox).

Note: Fuse numbering and exact assignments vary by engine (3.6/5.7/eTorque), lighting (LED/halogen), tow package, and market. Always verify against the printed legend on the fuse box lid and your owner’s manual. Below are the most common circuit groupings for this model year.

Under-hood Power Distribution Center (PDC)

The PDC contains cartridge (J-case) and mini fuses plus several serviceable relays. Typical circuits and ratings shown; confirm the fuse number on your lid legend.

Relays in the PDC (typical): Starter, A/C compressor clutch, blower (if not solid-state), radiator fan(s), and horn. Many lighting functions are BCM-controlled electronically and may not use stand-alone relays.

Interior fuse panel (left dash kick-panel)

This panel is integrated with the BCM and feeds most interior electronics. Access by removing the driver-side end-cap or the lower kick-panel cover.

Notes:

• Some 12V power outlets on Ram 1500 are ignition-fed and time-delayed; multiple outlets may each have their own 20A fuse. If one outlet is dead and another works, check each outlet’s dedicated fuse on the interior panel.
• The factory inverters (115V AC) and the optional wireless charger, if equipped, are protected by separate fuses on this panel or the PDC depending on trim.

Trunk/Cargo area and trailer circuits

The 2020 Ram 1500 does not have a dedicated trunk/cargo fuse box. Bed lighting, RamBox, and all trailer-tow circuits are fused in the under-hood PDC. Certain options add inline/aux fuses near the battery or behind the right rear seat.

eTorque note: Trucks with the 48V eTorque system have additional high-voltage fusing near the 48V battery under the rear seat. Do not service high-voltage components without proper training and PPE.

Verify the legend

Ram labels each fuse position and relay in the lid. The legend in your truck is the authority. Mopar changes assignments between trims and model years; when in doubt, follow the lid and owner’s manual.

How to test a fuse

• Visual check: Remove the suspect fuse and inspect the metal link. A broken or vaporized link indicates a blown fuse. Replace only with the same amp rating.
• Test light method (in place): With the key in the appropriate position (RUN for many circuits), probe both test tabs on top of the fuse. Power on one side only indicates a blown fuse; power on both sides is good; no power on either side means the circuit isn’t energized—check the relay/ignition feed.
• Multimeter method (removed): Set to continuity/ohms. A good fuse reads near zero ohms; a blown fuse is open/infinite.
• If a fuse blows again immediately, stop and locate the shorted component or wiring. Do not upsize a fuse.

Common blown fuses on this vehicle (what to check first)

• 12V power outlets (20A, yellow): Phone chargers, inflators, or fridge coolers commonly pop the outlet fuse. Check each outlet’s dedicated fuse on the interior panel and inspect the outlet for coins/debris.
• Trailer lighting (20A, yellow each): A shorted 7‑way trailer plug or damaged trailer wiring often blows the trailer Left/Right Stop/Turn or Park Lamp fuses in the PDC. Inspect the trailer first; verify the truck-side 7‑way for corrosion.
• Blower motor (40A J-case, green): If the blower fuse or the A/C clutch fuse blows, check for a seizing blower motor or shorted harness at the blower resistor/power module.
• ABS pump/module (40–60A J-case/25–30A): Corroded pump connectors or water intrusion can cause repeated fuse failures—scan for ABS codes before replacing parts.
• PCM/ECM (10–15A): Rare, but if blown, suspect aftermarket accessories tapped into ignition feeds. Remove add-ons and inspect harnesses at the intake/PCM.
• Headlamps/park lamps (10–15A): Halogen trucks may blow a lamp fuse if a bulb shorts. LED trucks use solid-state drivers; lamp issues may set codes without blowing fuses—scan the BCM.

If you’re unsure, or a fuse keeps blowing, a professional can load-test the circuit and isolate the fault without guessing.

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