warning system not working

[txbasshound]

1998 Mariner 150 EFI in a 1998 Astro 1800 DC. The high temp/low oil warning light and audible alarm have stopped working. Can't find anything unplugged or broken wires. Anyone have any suggestions?

 

[faztbullet]

Have you tested the horn???

 

[txbasshound]

Have you tested the horn???

Yes sir. I tested the Piezo and it works. The warning light used to come on with the alarm and after the audible quit, the light still came on. Now neither one comes on when the key is turned on.