Quick answer: Yes. Damaged irrigation control wiring can often be repaired underground when the failed section can be located and the repair is made with connections intended for wet, buried environments. The important step is finding the actual fault instead of creating unnecessary splices.
Why ordinary indoor connectors are a poor choice
Irrigation wiring lives in soil and valve boxes where moisture is expected. Connections need appropriate waterproofing and strain protection for that environment.
Finding the damage first
Electrical testing can determine whether a conductor is open, shorted or showing abnormal resistance. Wire tracing can help narrow the physical route before excavation.
Repair versus replacement
A localized break may need only a properly made repair. Repeated failures, extensive physical damage or an unknown series of old splices may justify replacing a longer wire section.
Waxhaw Irrigation provides underground wire tracing and valve locating as part of irrigation electrical troubleshooting.
