Not sure if your model has this under the pickguard, but I have it on my AVRI and it's a pretty decent piece of kit:
http://www.ebay.com/itm/NEW-Genuine-Fen ... SwMmBViI~m" onclick="window.open(this.href);return false;
Easy way to upgrade the shielding on your Jazzmaster if you don't. Sounds like you just have a bit of shielding paint in the cavity, and not even covering the whole cavity, so that's probably a good place to upgrade. I've used shielding paint before as well as the conductive tape, it all helps and I haven't really noticed any difference one way or the other. I also have the brass tubs in my AVRI, which is not a particularly noisy instrument, but I don't know what kind of a hassle it might be to add it. It seems like it would require you to basically take all the guts out of the guitar (again) and reassemble it around the tubs.
Which might not be a bad idea.
I'm pretty fanatical about reducing noise, and so I also tracked down an anodized aluminum pickguard for my AVRI Jazzmaster. That was part of the original Jazzmaster strategy for reducing noise, although they quit doing it pretty early on in the Jazzmaster's history, but it could still be a viable alternative:
http://www.ebay.com/itm/Gold-Anodized-A ... SwT4lWR5AB" onclick="window.open(this.href);return false;
And I've come around to thinking that aluminum pickguards are the way to go. I have one on a Firebird that I have, and on one of my Jazzmasters and I can't speak highly enough about them.
Megan's idea about the braided wrapping seems solid, and if I ever re-wire a guitar I'll probably do that, but there is also shielded wiring that I've used in the past as well. You could go by and replace all that.
So, Andy is correct, there will always be noise with the Jazzmaster, but if you've done all that then you've done all you can do, and the situation is what it is.
That's all I know about the subject! Oh, you could always contact Ilitch noise and he'll route your guitar for you and install his dummy coil based system:
http://www.ilitchelectronics.com" onclick="window.open(this.href);return false;
And that's a pretty cool solution. Expensive. Invasive, in the case of the Jazzmaster... I asked, he says he'd need to route it.
Back in those days, everyone knew that if you were talking about Destiny's Child, you were talking about Beyonce, LaTavia, LeToya, and Larry.
