Detroit Throttle Jumper Harness for Bench Testing

Our Detroit throttle jumper harnesses enable bench verification of throttle position sensor (TPS) signals to the ECM, letting you start the engine, idle up/down, and confirm proper throttle response right on the shop floor. This basic harness connects to our base bench harness and is wired specifically for Detroit Diesel throttle circuits—essential during conversions to catch any signal issues early and prevent drivability problems like hesitation, no throttle, or codes after installation.

By adding this jumper, you can quickly test throttle communication and ensure smooth integration when swapping in a Detroit Series 60 or DD-series engine.

Browse our Detroit throttle jumper harnesses below to add this capability to your bench setup. Pair it with our base bench harness and battery jumper for complete testing. Questions about DDEC compatibility or TPS signal verification for your conversion? Contact our team for guidance.