The Toyotomi Circuit Indicator Lamp, part number 20478376, is an OEM electrical indicator component designed to display heater operational status, helping users and technicians visually confirm system activity and control signals on compatible Toyotomi oil heaters.
What’s included: One (1) Toyotomi circuit indicator lamp.
Installation limits: Intended for replacement during heater electrical service; installation should be performed with electrical power disconnected and in accordance with manufacturer wiring procedures.
Compatibility: Compatible with Toyotomi L56, L73, and L73AT oil heater models.