2007 Peterbilt 387 Fuse Box Diagram (2025)

1. [PDF] Model 387 schematics

  • 1) INDEX SYMBOL KEY. 2) HARNESS FLOW CHART. 3) +12V POWER DISTRIBUTION. 4) NEGATIVE POWER DISTRIBUTION. 5) +12V POWER DISTRIBUTION (OPTIONAL DISCONNECT).

2. [PDF] Model 579,567 - Peterbilt

  • compartment fuse box cover. A latch- ed cover ensures a water tight seal ... Refer to a wiring diagram for your chassis before adding electrical ...

3. 2007 Peterbilt 387 wiring diagram | TruckersReport.com Trucking Forum

4. peterbilt 387 Fuse box or relay box - Trucking & Driving Forums

  • The main fuse/breaker assembly is under the hood on the passenger side mounted to the firewall next to the windshield washer fill tube.

  • Owner Operators Forums - peterbilt 387 Fuse box or relay box - I was wondering does anyone know how to reset the fuse box or circuit breaker on a peterbilt 387. My radio fuse blew out. I remove the glove box and there are no fuses just a red light on the fuse box indicating the radio fuse is Out.. thanks in advance[/lis

5. Peterbilt 387 Fuse Box for Sale - VanderHaags

6. Peterbilt 387 Fuse Boxes, New/Used - Vander Haag's Inc

  • Peterbilt 387 Right/Passenger Fuse Box - Used USED - Mounts to exterior firewall, Does not include wiring or cover Item:25479514 Winamac, IN $625.00

  • Search our large inventory of New/Used Peterbilt 387 Fuse Boxes for sale. Enjoy our hassle-free online checkout or call to speak to an expert.

7. Peterbilt Fuse Boxes & Panels - 579, 387, 386 and More

  • Shop Peterbilt fuse boxes & panels at My Little Salesman. Browse our great selection and choose from a variety of features and specs.

  • If you believe this is a mistake, please fill out the form below and we will review your request to remove the block.

8. [PDF] 0000018081_2.pdf - International® Trucks

  • ... Relay Function and Wiring Guide. 11. Page 26. ELECTRICAL CIRCUIT DIAGRAM MANUAL. 2.12. SCHEMATIC SYMBOL CHART, P. 9. THIS PRINT IS PROVIDED ON A RESTRICTED ...

9. New and Used Peterbilt Fuse Box for sale | TPI - Truck Parts Inventory

  • Peterbilt 579 Fuse Box, P/N S53-1293-17E for , from a 2017 Peterbilt 579 Truck. Mounts to drivers... 1-855-878-2967. Email Seller More ...

  • Find new and used Peterbilt Fuse Box for sale near you. View all 23 Fuse Box including 579, 567, 320, 389, and more.

2007 Peterbilt 387 Fuse Box Diagram (2025)

FAQs

Where is the fuse interior fuse box? ›

A: Usually, there are two fuse boxes in a car, one located under the hood and the other near the dashboard or steering wheel.

What are the main fuses in fuse box? ›

Your fuse box will have two sets of fuses. At the bottom will be 15-amp and 20-amp screw-in fuses with glass faces that are exposed and visible. These fuses will service branch light circuits and outlet circuits. At the top will be 30-amp or 40-amp cartridge main fuses for ovens, laundry rooms, or stoves.

Where is the secondary fuse box? ›

The secondary under-hood fuse box is next to the battery. To open it, push the tabs as shown. If something electrical in your vehicle stops working, check for a blown fuse first.

How do you find a hidden fuse box? ›

Search inside your home.

Keep an eye out for a metal box, usually flush with the wall. The box will have a metal door to keep the breakers or fuses protected. Check your garage for the circuit breaker or fuse box. It might also be in a storage room, utility room, the basement, or a hallway.

Where is my main fuse? ›

The first thing to do is find your main fuse box (these days called a consumer unit), which will be in the same place as your electricity meter. They're often in the main hallway of a house, in a purpose-built cupboard.

How do I know which fuse is blown in my fuse box? ›

You must visually inspect the fuse to see if it has blown. Household electrical fuses typically look like a cylinder or plug with a glass window in the middle or on top. In that window, you should see a thin metal strip without any breaks or discoloration.

Where is the main fuse connected? ›

The main fuse is connected in the live wire so that if the current exceeds its rating, the fuse melts and breaks the circuit; thus, preventing the excessive current from flowing into the circuit.

Where is the fuse box on a 389 Peterbilt? ›

My 2016 389 has 3 fuse boxes. 1 under the hood on firewall on drivers side, 2, inside cab at the left foot area near clutch pedal, 3, inside sleeper under bunk accessed from the door on sleeper.

How do I know if my truck fuse is blown? ›

The filament must be continuous from one terminal to the other for current to flow. If the filament is broken through, there's melting visible, or there are black or brown burn marks inside or on the outer portion of the fuse, it's an indication the fuse is blown. Use a circuit tester/test light or DVOM.

Where is the main ignition fuse? ›

Depending on make & year, most later models have a high amperage fuse in the main fuse box in the engine compartment. Usually this fuse is labeled ignition. Or you can pull the fuel pump fuse. You can look at the owners manual to identify the fuse or look at the fuse box cover to see proper fuse.

Where is the fuse board? ›

The first thing to do is find your main fuse box (these days called a consumer unit), which will be in the same place as your electricity meter. They're often in the main hallway of a house, in a purpose-built cupboard.

Where is blown fuse located? ›

Open the fuse box door. Inspect each fuse using a flashlight to find the one that is burned or melted (the working fuses will have a clear glass casing but the blown one will look cloudy or blackened).

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