đź“Ť Driver side, under dash panel (left of steering column).
Note: Always verify with your specific VIN and chassis configuration—Peterbilt used slightly different layouts depending on options. 2015 Peterbilt 389 Fuse Panel Diagram
On the 2015 Peterbilt 389, the main fuse panel is located inside the cab, behind the lower dash panel on the driver’s side (left side of the steering column). A secondary power distribution module is often found in the battery box for high-current circuits. 📍 Driver side, under dash panel (left of steering column)
The 2015 model year uses blade-type fuses (mini and ATO). Always replace with the same amperage. đź“Ť Driver side
Missing/faded fuse panel diagram.