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Home >> Lexus >> 1998 >> LS 400 >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control System >> Component Tests >> Standard Horn

Standard Horn

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Disconnect both standard horn connectors (located behind center of grille). Connect battery positive lead to terminal No. 1 (Green/Black or Green/White wire) and negative battery lead to horn body. If horn does not operate, replace horn. If horn operates, repair or replace wire harness and connectors between horn and horn relay.