Thread: Irregular horn
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Old 7th April 2024, 14:06   #17
SD1too
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Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model.

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Thanks for the progress report Lee.

You can confirm your suspicion by taking the white 6 pin connector (C0082) female side and, using a temporary link, join pin 1 (purple/black wire) to pin 6 (black). The horn should sound immediately and when you remove the link it should fall silent.

This test by-passes the rotary coupler and steering wheel horn switches. As you have ruled out the latter by substitution, it effectively puts the rotary coupler in the witness box.

Simon
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