Cut & paste from the post at forum.area451parts.com:
Yikes! That part of the video sure makes interesting listening!! I'll see what I can do to get that cleaned up. The original .avi has clean audio so that should be a quick fix. I went through that section of the small format video and came across the same bad audio.
Oh, but wait! If you want to look before it's fixed, that last section is a huge file (365 Meg, FIOS ready) at http://johnhandwork.com/rawvideo/MVI_0845.avi
but I'll get it fixed soon.
For the first kits out the door (email sent to those who already have them on their way) I forgot a few small pieces so there's a couple days before you'll have those in hand anyway.
As for the battery disconnection, it is an extra "level of safety." In my opinion this operation is similar to plugging in a new component like a radio or a wiper control arm and shouldn't require
disconnecting the battery. Since that original direction was suggested by the Area451 folks, please consider their advice.
If the red wire is cut with wire cutters or scissors with insulated handles, there will be no capacity to do damage to the cruise control. If uninsulated clippers are used and you have built-up static electricity, there's a chance you could damage the LED driver but collateral damage even in that kind of circumstance is rare.
Bottom line: please use insulated cutters or scissors for the red wire whether you choose to disconnect the battery or not.