No idea where the horns are hidden on a G-wagon, but look for two flat round items, 'bout the size of the tea cup saucer. Most MB's have them mounted to the aux fan bracket, or just in front of the radiator if no aux fan installed. Should be easy to spot, they should also have a series of openings aound the face of the unit.

__________________
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.