Wireless antenna wires are stripped in new Inspiron 1464

Hi all.

I bought a new Inspiron 1464 recently at Staples. It didn't come with a Bluetooth module, so I ordered a Bluetooth module from Dell and was installing it. During this process, I had to reroute the wireless antenna wires and I noticed that they were both stripped of their outer sheath near the wireless card. Note that the inner parts of the wires aren't exposed; only the outer sheath is removed:

Actually, to be completely accurate, the part that was stripped originally had a piece of (electrical? conducting?) tape covering the stripped area and it was taped to the silvery part near the wire; it was similar to the following image:

(This second image is actually the way I have it set up now. The original tape was kind of silvery and I threw it away without thinking).

So now, I have a number of questions.

1) Why was this wire stripped? Is this poor workmanship or is there a technical reason for it being stripped?

2) What should I do? Should I put insulating tape or conducting tape on the wires? Should I try to separate the wires with the insulating tape or should I be letting them touch?

I appreciate any help/advice anyone can give.

Jonathan