Garmin part number is 0110338600

These sell on eBay for $65-100+ new.

https://www.ebay.com/sch/i.html?_fro..._odkw=zumo+590

Complete harness with 1 USB connector and 3 mini-headphone type connectors and 1 fused power cable.

Bought this for my new 2020 RT but realized the mount does not fit my Zumo 660.

$55 shipped USPS, CONUS, PayPal Friends and Family.

Thanks.

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