I simply looped the cable around the holder and user a Velcro stick on to stick it to the back of the holder.
however - I gave up on this solution:
1: it won't charge the phone
2: the sound quality is shocking with background hiss and crackles.
Instead I did the combox upgrade and use a regular lightning cable. cost about £400 but worth every penny IMO - great sound and charges the phone.
Neil
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