spliced mine as i too could not find the PDC speaker and when all pluged in the sensors wouls not sound off but as soon as i added the spliced in wiring and speaker i can hear the sensors working
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this plug fits into the bumper wiring for the sensors
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While inside the boot area the white clips fits into the parking aid ywc 105 180
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And the black clips also fits into the same box you must make sure the cam is flat down otherwise the clips will not fit in properly
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Double sided tape ready for fitting back against the rear wing panel
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After fitting i had no sound and could not find the speaker under the rear parcel shelf i relised that it used the
IPK sounder but i still got no sound so i fitted and spliced in a speaker works great
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Hope this helps in some way Arctic.