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Horn Relay

Check for continuity between terminals No. 2 and No. 3. See Fig 1 . Continuity should not exist. Using jumper wires, apply battery voltage to terminal No. 1 and ground terminal No. 2. Continuity should exist between terminals No.2 and No. 3. If not as specified, replace relay.

Fig 1: Identifying Horn Relay Terminals.

Courtesy of ISUZU MOTOR CO.