Added cable drag chain that I had from an old printer.

Requires fitting new printhead covers with shortened cable guide and mount for cable drag chain.

Removed original arm at rear of printer and fitted new mount.

Cable drag chain mounted using 3 M3x8mm counter sunk screws at each end this of course will depend on your cable drag chain.

Cable drag chain used is similar to this one on ebay https://www.ebay.co.uk/itm/336301620463

My cable chain is 10x15mm and 440mm long

I did remove a section of the cable drag chain to allow filament tube to come out without tight bends, you could just attach it to the outside with the original velcro ties.