All our company twin time had been accumulated on Bell 212/412 helos, which were then replaced with the S-76. The Bells had the fire handles in the centre of the instrument panel with red lights in the handle which you pulled and turned to blow the bottles.
The S-76 had an engine fire warning in a group of four red lights to the right of the flight instruments, the engine fire warning was the upper right light (no indication which engine), you then had to look to the overhead to see which engine had the fire light illuminated. The check pilot on the conversion caught everybody out by giving an an engine fire indication during the engine cool down period. The instrument panel light illuminated, upper right caption, student swiftly shutdown #2, had the student bothered to look to the overhead he would have found the fire to be in #1. Lesson indelibly imprinted.