Peterbilt 389 relay switch ecm power image0 heavy medium 2000 peterbilt 379 wiring diagrams
I have a 2017 peterbilt 389 with no power to ecm. Checked the ecm power
1996 Peterbilt Fuse Diagram
Peterbilt 379 wiring I have a 2017 peterbilt 389 with no power to ecm. checked the ecm power