"Wait-To-Start" Indicator Stays On

Disconnect "WAIT-TO-START" indicator connector at glow plug module. See Fig 1. Turn ignition switch to ON position. If indicator is on, repair wiring to indicator. If indicator is off, disconnect batteries and replace glow plug module.

Fig 1: 7.3L Glow Plug System Diagnostic Test Points

Courtesy of FORD MOTOR CO.