We’ll show how to set up a typical wire and valve locator, how to locate a valve, track and mark the wire location to aid in troubleshooting wiring issues, and how to determine the wire depth. Wires are normally buried in the same trench as the mainline, so wire tracing is also a good process to determine the location of the mainline throughout a site. Wire tracing along with basic electrical troubleshooting skills will help you solve a lot of common sprinkler system malfunctions. When you need to find the location of a faulty wire or shorted wire path, you should consider the use of a Ground Fault Locator.