Peterbilt starter interrupt relay. The bypass relay is yellow and typically resolves this issue. Dec 6, 2023 · It's the starter interrupt relay behind the gauge cluster. Dec 5, 2010 · 07 Peterbilt 379 starter/relay problem Discussion in ' Peterbilt Forum ' started by scottclymer, Dec 5, 2010. When trying to crank it keeps dropping power to the "relay"/solenoid on the starter. The starter interrupt relay (XC-JMPR) controls power to the starter circuit. Has constant 12v out of the key switch to starter, but power comes and goes at the relay. I can put power to the relay and cranks over fine. STARTER RELAY SWITCH FOR PETERBILT 2 Prong 2 Terminal Bosch Type Can't find the part you need? Call us at 801-406-2026 for assistance. Without a proper wiring diagram, you can face potential electrical issues that can lead to costly repairs and downtime. Peterbilt Starter Relay Switch (2 Prong) | CB12100 from Peterbilt Parts. ofhrc udksp ivxw aeitkt yuafqc ddrjzm mwvq yxktl lbmm adctkz