describe: Trace wires even inside wiring harnesses, behind panels, under carpets, upholstery and more Easy to use: Simply place the transmitter in series with the circuit or wire under test (ie: in place of a blown fuse, through a connector, in series with an open wire, light bulb socket, etc.) and scan the circuit/wire using the tracer flexible probe to find the fault point * 42 V Ready: for new generation vehicles Hybrid or single 42-volt system *Operates from 6 to 42 VDC * Internally protected against surges and overloads * 7" flexible probe can reach wires in congested areas * Transmitter and receiver LEDs indicate open or short circuit situation * Adjustable sensitivity for all tracking situations * No threading required, contactless technology! How to use the probe? The receiver's probe is made of rolled steel and can be bent as needed to achieve Electrical wiring in congested or difficult areas. Depending on circuit characteristics and sensitivity settings, The probe will pick up signals from a series of locations on the wire. However, for the best The probe tip (black hat) of the receiver should be placed vertically (90) over the possible range to the wire being traced and above or below it. packing list: 1 x car short circuit and open circuit detector 1 x instruction manual Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.