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Horn Volvo Amazon (B18)

A silent or hoarse horn is usually caused by corroded contacts, poor ground or a worn relay – the same weak spots that plague the 122's electrical system as a whole. On B18 cars the current runs through the 12-volt system introduced in August 1961 together with the B18 motor, and worn mounts that shake loose tend to cause intermittent operation.

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This category gathers horns and related parts for the 122 with B18 motor. The group includes the horn, relay and grommet for cable routing, plus a fastening set with screw, nut, washer and toothed washer that holds the horn securely and ensures a solid ground. A gasket is included where sealing is needed.

When troubleshooting it is common to start with the ground point and the contacts before condemning the horn itself – the toothed washer that scrapes clean against the metal is often the key to a stable tone. Always use the chassis number and version when selecting parts, as details can differ between model years.

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