Extending guitar pickup leads

[MG Eddie]

Ok so I've read that you can extend guitar pickup leads by twisting the wires together and putting some heat shrink tubing over the top of it to keep it from arc-ing. Do you have to do this with each individual lead or can you just strip all of them bare and twist them together?

 

[PRHunt]

You would certainly need to insulate each join. Is that what you were asking? I suggest that you splice and solder than just rely on a twist.