The cable runs in a warm, damp location and its connectors are a common failure point; a degraded cable shows as a drifting, noisy or dead reading with a component that is itself sound. This is the lamp cable for the SLR2581. Lamp leads carry the ignition pulse as well as the running current, so insulation condition matters more here than the current rating alone would suggest. Wedeco was founded in Herford, Germany in 1976 and is now a Xylem brand.