Patent ID: 8164343
Filing Date: 2012-04-24
Classification: G01R

Abstract:
1. A vehicle electrical system tester for testing the electrical system of a vehicle, the electrical system having wiring which couples a load to a battery, the vehicle electrical system tester configured to measure an electrical parameter of the wiring and comprising: a first battery terminal connection configured to couple to a first terminal of the battery; a second battery terminal connection configured to couple to a second terminal of the battery; a test connection configured to couple to a wire of the electrical system which is electrically connected between the first or second terminal of the battery and the load; and test circuitry coupled to the first and second battery, terminal connections and the test connection, said test circuitry comprising a processor programmed to draw current from the battery along a path through the wire and the test connection and return the current to the battery, measure the electrical parameter of the wire with a sensor coupled to the test connection and responsibly provide an output based upon the electrical parameter and a measurement of a gauge of the wire.