2020 Jeep Wrangler Fuse Box Diagram & Amperage

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Quick answer

Your 2020 Jeep Wrangler JL has two primary fuse box locations:

1. Power Distribution Center (PDC): Located in the engine bay on the passenger side, near the battery. This box houses high-amperage fuses and relays for critical engine and powertrain components.
2. Interior Fuse Box: Located behind the glove box. You can access it by opening the glove box, pressing the tab on the right side, and lowering it completely. This panel manages fuses for interior accessories and body electronics.

Always consult the diagram printed on the inside of your fuse box lids to confirm the exact configuration for your specific trim and options package.

Under-Hood Power Distribution Center (PDC)

This is the main fuse box for your Wrangler, containing larger cartridge fuses and relays that control the vehicle's most essential systems. To access it, open the hood and locate the black box on the passenger side of the engine compartment. Release the cover tabs to open it.

PDC Fuses & Relays (Most Common)

Relays in this box include: Starter Relay, A/C Clutch Relay, Fuel Pump Relay, Blower Motor Relay, and several others controlling powertrain and cooling systems.

Interior Fuse Box (Behind Glove Box)

This fuse panel handles the circuits for most of your cabin accessories, including infotainment, power outlets, and lighting. It's tucked away behind the glove box to protect it from the elements. After lowering the glove box, you may need to remove a secondary plastic cover to see the fuses.

Interior Fuses (Most Common)

How to test a fuse

If a component like your radio or headlights stops working, a blown fuse is a likely culprit. You can test a fuse in two ways:

1. Visual Inspection: Pull the suspect fuse using the puller tool often found in the fuse box lid. Hold the fuse up to the light. Inside a good fuse, you will see an intact, S-shaped metal filament. If that filament is broken or burned, the fuse is blown and needs to be replaced.

2. Using a Multimeter: For a more definitive test, set a multimeter to the continuity setting (it often looks like a sound wave symbol). Touch one probe to each metal blade on top of the fuse. If the multimeter beeps, the fuse is good. If it remains silent, the fuse is blown. This method is useful because sometimes a break in the filament is too small to see, and it allows you to test fuses while they are still in the fuse box.

Important: Always replace a blown fuse with a new one of the exact same amperage rating. Using a higher-rated fuse can cause a fire.

Common blown fuses on this vehicle

While any fuse can blow, some are more common than others on the 2020 Jeep Wrangler.

• F97 (20A Yellow) - Cigar Lighter / 12V Power Outlet: This is the most frequently blown fuse. It's often caused by a faulty phone charger, a loose coin falling into the socket, or a defective device plugged into it. Before replacing the fuse, inspect the 12V socket and unplug any devices.

• F06 / F07 (20A Yellow) - Trailer Tow Lights: If you tow with your Wrangler, incorrect or damaged trailer wiring is a primary cause of blown fuses. If you connect your trailer and find the turn signals aren't working on the trailer, check these fuses first. Then, inspect the trailer-side wiring harness for shorts or damage.

• F91 (15A Blue) - Radio: The Uconnect system can sometimes blow a fuse. If your screen suddenly goes black and won't turn on, this fuse is the first place to look. If the fuse blows repeatedly, there may be an issue with the radio unit itself or aftermarket equipment connected to it.

If you replace a fuse and it immediately blows again, you have a short circuit in that component or its wiring. This indicates a deeper electrical problem that needs professional diagnosis.

Electrical issues can be tricky. If you're not comfortable diagnosing the problem yourself, it's always best to seek professional help. Find a trusted shop on Repairius. '''