Loadpro Dynamic Test Leads LOADpro finds these problems FAST: High Corrosive Resistance. Shorts to Ground. Open Circuits. LOADpro Test Leads load the circuit to see if current can flow. By loading the circuit, LOADpro makes a voltage drop test “on the fly”.. Just press the switch – the test results can not lie.. Use LOADpro w/your DMM and follow our test method - you will find wiring faults quicker.. LOADpro Test Leads feature SteadyPin Probe Tips, which allows the probe to sit firmly on a male ECM or connector pin.. LOADpro are OEM approved – finds corroded circuits fast! 180 Prop65 information pending -