I need a wiring schematic for a 1994 Peterbilt I need a wiring schematic for a 1994 Peterbilt I i have a 94 Peterbilt 378 and I was hoping some one could. i need the wiring diagram for a 93 peterbilt from the firewall down to the ecm. the truck had a detroit 12.7 and i installed a 3406e the last 6 of the 3/5(755) 1994 Peterbilt 379 Wiring Diagram | IndexNewsPaper 1994 Peterbilt 379 Wiring Diagram • this is images about 1994 peterbilt 379 wiring diagram posted by Alice Ferreira in 1994 category. You can also find other images like 1994 truck wiring diagram,1994 peterbilt 379 owners manual,1994 peterbilt 379 rear suspension,1994 western star wiring diagram,1994 kenworth w900 wiring diagram,1994 mack 1994 peterbilt 378 wiring diagram - Fixya 1994 peterbilt 378 wiring diagram - Cars & Trucks. Posted by Anonymous on Sep 28, 2013. need stereo wiring diagram for 2000 Peterbilt. We only have car and light truck diagrams available sorry. Posted on Nov 01, WOULD LIKE TO FIND A WIRING DIAGRAM FOR A 1994 F150 RADIO.