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Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go hereXJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.
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If you check and the wiring and relay is good more than likely the air bag cover has shrunk compressing the horn contacts. I haven't fooled with a Jeep yet but on a Buick I inserted a slice of an old plastic credit card to hold the contacts apart until the cover was actually pressed.
Follow all safety precautions 110% when fooling around with the air bag.