ECTRICAL (ATA-24), Provisions for Standby Engine Instrument Signal Conditioner (Watch Dog Timer) Test Citcuit-Installation, dated January_30, 1990, G-IV Wiring Diagram Manual -draving 1159AV40192, Standby Engine Instrument Indicator (sheet 1 of 1) 77-3-1. Page -2, dated January 19/90; and G-IV Wiring Diag