The Lochinvar & A.O. Smith 100338933 Wire Plug Assembly is a replacement electrical connector designed to provide a secure connection between wiring harnesses and system components. It supports reliable electrical signal transmission without requiring wire splicing, helping maintain proper control communication. This service part is used with compatible A.O. Smith and Lochinvar gas-fi... https://www.partshnc.com/lochinvar-a-o-smith-100338933-wire-plug-assembly-service-part