Horn Relay!

Hi I have mentioned this in another post but no replies, I need to know which is the horn relay in the drivers side fuse box of my 1996 SR I have tried to locate it by depressing the horn on the steering wheel and listening for the click of the relay but there is no noise so obviously the relay U/S? I would greatly appreciate any advice and help with this problem!
Cheers
Andy B-)
 
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