2016 Ram 1500 Fuse Box Diagram & Amperage Guide

As an ASE-certified master technician, I know that tracing electrical issues can be frustrating. But with a little guidance, you can often solve them yourself. This guide to the 2016 Ram 1500 fuse boxes will help you identify the right fuse, understand its function, and get your truck back to 100%.

Note: Fuse configurations can vary based on your truck's trim level and options (Laramie, Big Horn, Sport, etc.). Always verify fuse and relay functions by checking the diagram printed on the inside of your fuse box cover. This guide represents the most common configuration.

Quick Answer

Your 2016 Ram 1500 has one primary, user-accessible fuse box, officially called the Power Distribution Center (PDC).

• Under-Hood Power Distribution Center: Located in the engine compartment on the driver's side, near the battery.

There are no other traditional fuse boxes (like in the dash or trunk) for the user to service. Other control modules are integrated throughout the vehicle but are not simple fuse panels.

Under-Hood Power Distribution Center (PDC)

This is the main hub for nearly all of your truck's primary electrical circuits. To access it, open the hood and look for a large black box on the driver's side. Release the clips or tabs to remove the cover. Inside, you'll find fuses, relays, and a layout diagram on the underside of the cover.

Fuse Assignments

Here is a list of the most common fuses and the components they protect.

Relay Locations

The PDC also houses larger cube-shaped relays that switch power to high-amperage components.

• Starter Relay: Controls power to the starter motor.
• Fuel Pump Relay: Powers the fuel pump. A common failure point.
• A/C Clutch Relay: Engages the air conditioning compressor.
• Blower Motor Relay: Controls the main fan speed for your climate control.
• Headlamp Relays: Powers the high and low-beam headlights.
• Run/Start Relay: Provides power to ignition-switched circuits.

How to Test a Fuse

If a component isn't working, a blown fuse is the first place to look.

1. Turn off the vehicle.
2. Locate the suspect fuse using the diagram above or the one on your fuse box lid.
3. Remove the fuse. A small plastic fuse puller is often included in the fuse box. If not, needle-nose pliers will work carefully.
4. Visually Inspect the Fuse. Look at the thin metal strip inside the plastic body. If the strip is broken or appears melted, the fuse is blown.
5. Use a Multimeter (for a definitive test): Set your multimeter to the continuity setting (it often has a beep symbol). Touch the probes to each of the two metal tabs on the top of the fuse. If the multimeter beeps, the fuse is good. If it remains silent, the fuse is blown.
6. Replace the fuse. If the fuse is blown, replace it with a new fuse of the exact same amperage rating. Never use a higher-rated fuse, as this can cause catastrophic damage to the wiring and is a fire hazard.

Common Blown Fuses on the 2016 Ram 1500

Certain circuits are more prone to issues than others. If you find one of these fuses blown, here's what to check first:

• Fuse F90/F91 (Cigar Lighter / 12V Outlets): This is the most common blown fuse. What to check first: The number one cause is a coin or other metal object falling into the outlet and shorting it out. Unplug any chargers, then use a flashlight to inspect the outlet for foreign debris before replacing the fuse.

• Fuse F09D/F25 (Fuel Pump): If your engine cranks but refuses to start, check this fuse. What to check first: While the fuse could simply fail, it often blows because the fuel pump is aging and drawing too much current. If the replacement fuse blows again immediately, you likely have a failing fuel pump that needs to be diagnosed by a professional.

• Fuse F30/F82 (Trailer Tow Circuits): If your trailer lights or brakes aren't working, these are the fuses to check. What to check first: The issue is almost always with the trailer's wiring, not the truck. Inspect the trailer-side plug for corrosion or damage and verify the trailer's wiring is not shorted or damaged before you replace the fuse.

• Fuse F93 (Radio): If your radio or Uconnect screen is completely dead, this fuse is the first stop. What to check first: This is typically a straightforward failure. If replacing the fuse doesn't solve the problem, the issue lies within the radio head unit itself.

Following this guide can help you solve many common electrical issues with your Ram 1500. For more complex diagnostics or for repairs you aren't comfortable performing yourself, don't hesitate to get professional help.

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