Great tips and very helpful. As you suggested there is the option to simply unscrewing the phone holder and cutting the wires. One is only a small co-axial, so just put a bit of tape over the end. The other is small five core. Just peel back the outer sheath and keep each wire separate and again tape up. You could put a blob of silicone on of you wanted to seal it fully. I didn't. Then just tuck the wire back in to the recess before covering. I made a simple card cover with folds in the right places. Then covered it with sticky back plastic (you could use vinyl wrap). Cheap and easy. Looks ok.
Great tips and very helpful. As you suggested there is the option to simply unscrewing the phone holder and cutting the wires. One is only a small co-axial, so just put a bit of tape over the end. The other is small five core. Just peel back the outer sheath and keep each wire separate and again tape up. You could put a blob of silicone on of you wanted to seal it fully. I didn't. Then just tuck the wire back in to the recess before covering. I made a simple card cover with folds in the right places. Then covered it with sticky back plastic (you could use vinyl wrap). Cheap and easy. Looks ok.