The Trombetta P613-A42V24 is a 24 volt pull type solenoid built to withstand high temperatues and high vibration environments. This model is typically sold as a replacement part for Cummins (part # 3921980), and Case (part # J921980).
The quick-disconnect houses the red wire for coil hold-in, the white energize wire and the black ground wire. The wires measure approximately 8" in length.