:uhoh: My alarm went off. I had the car over a year, this never happened. Horn honking like crazy. Found an I.O.D. switch under hood. This worked, now I have no radio or horn. What is an I.O.D.? An instant off device????? Please help. Thanks.

What is an I.O.D. switch under the hood? It has a yellow switch that disabled an out of control horn alarm, but now radio and horn are not working. Help!!