I had a problem with my concert stereo (1 year old stuck coins in the cd slot!), so i took it to a car audio place for repair. when he pulled the stereo out he cut some wires stating that they were left over from an old parrot installation and thus would 'interfer' with my system.
since then ive noticed my high horn has stopped working, can someone please tell me if the cabling from the steering wheel to the horns located at the front run behined the stereo. if so i think he has cut the cable for my high horn.