I have a WDB463, 300GEL, right hand drive. Horn / hooter has failed. Fuse is OK. Continuity at steering column is OK. But......embarsssingly.....can't find the actual horn unit. Had the bull bar and front grill off. Nothing there... I've lost all credability with my kids. I just want to test the actual unit. Can anyone help?? Thanks. Alastair.

They're (there are two) located behind the grill. Remove the bull bar. There are four screws located on the top of the grill. Remove those, tilt the grill forward and pull up. The horns are mounted right next to the radiator.

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