Loadpro & Troubleshooting Book Combo LOADpro Test Leads load the circuit to see if current can flow.. LOADpro finds these problems FAST: High Corrosive Resistance. Shorts to Ground. Open Circuits . 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 test leads are OEM approved – finds corroded circuits!. #182 FET book is 200 pages of basic electricity explained in a way that make it useful in the shop.. Everything is covered, from batteries, to relays, to schematics – its all in the book! 181 Prop65 information pending -