Increase volume of backup chime?

[Vickram]

Is there a way to increase the voluum of the backup chime ?
My hearing isn't as keen as it once was .

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[fossil]

on my old F series the radio volume control worked for navigation but only while it was talking.

 

[lewiskauffman]

I'm following this one- https://www.mavericktruckclub.com/forum/threads/changing-hybrid-backup-sound.40883/

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