The horn is OK. Replace the horn. 9 - 45 SIGNALING SYSTEM ELEC – + ELEC – + 3. Horn • Disconnect the black connector at the horn terminal. • Connect a jumper lead 1 to the horn ter- minal and ground the jumper lead. • Set the main switch to “ON”. • Push the horn switch. • Does the horn sound? P 1 YES NO YES NO P