TRAILER HARNESS TRAILER PLUG PD803001.FRM Model 379 Family Wiring (before 7/94)(2 of 2). The Peterbilt 379 wiring schematic also includes wiring for gauges and instrumentation. These components provide important information to the driver, such as the speed of the truck, engine temperature, fuel level, and oil pressure.
![[DIAGRAM] Wiring Diagrams For Peterbilt Trucks](https://www.epcatalogs.com/file/c56886a7d4a5a411d1273427f74c3037fd70faa2/peterbilt-truck-389-model-family-electrical-schematic-manual-pdf.png "[DIAGRAM] Wiring Diagrams For Peterbilt Trucks")
CHASSIS SENSOR ADD-ON - TRANSFER CASE OIL TEMP / BRAKESAVER OIL TEMP / GENERAL OIL TEMP / AUX XSMN OIL TEMP # 3 / PTO OIL TEMP. I need a service manual and wiring schematic for 2004 Peterbilt 378 with c12. I can't find anywhere on this site to download this info if I could find that also.