
 Originally Posted by 
SII Josh
					 
				 
				Howdy all,
i just pulled the top housing off my Horn because i could hear some thing inside like sand, and it was. 
Does anyone know how to test to see if the Horn still works? 
I have added a photo that shows something all over the insides 
 
Cheers for your time
 
	 
 
The stuff over the insides looks like melted or decomposing insulation.
The horn is a simple device just a solenoid and a set of contacts. 
When you connect to a battery the solenoid moves & opens the contacts, the solenoid releases and the contacts close.......this repeats over & over again at high frequency
Check the contacts open mechanically and look clean, if not pull some emery paper through the contacts to clean then holding them open pull some rag with some metho on through.
Connect to a battery (get ready to disconnect quickly if that is melted insulation !) If it doesn't work there is an adjustment on the contacts, undo the locknut & adjust (be prepared for when the horn suddenly starts working !!).
Best of luck.
Colin
				
			 
			
		 
			
				
			
			
				'56 Series 1 with homemade welder
'65 Series IIa Dormobile
'70 SIIa GS
'76 SIII 88" (Isuzu C240)
'81 SIII FFR
'95 Defender Tanami
Motorcycles :-
Vincent Rapide, Panther M100, Norton BIG4, Electra & Navigator, Matchless G80C, Suzuki SV650
			
			
		 
	
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