Bob,
I agree that *I* wouldn't use aluminum, but Airstream didn't share those sentiments in the late '60's.

It doesn't necessarily "cause shorts", it causes hot connections due to oxidation and the physical movement during current applications. The movement causes connections to become loose, causing more heating, causing more movement, etc. You then get a fire. :-(

Bob Noyes wrote:

> On Sun, 14 Mar 1999 19:58:02 -0500, Jim Dunmyer wrote:
>
> >Denny,
> > That is probably the original wiring and is fine to reuse. My '68 has aluminum Romex in
> >the walls for both the 12VDC and 115VAC circuits.
>
> I don't know about trailers, but aluminum Romex does not meet code in
> California and is illegal to install. The aluminum oxidises and cause
> shorts. Perhaps Weston, the Aluminum Wizard, can shed light on this or
> perhpas an electrician.
>
> I would not use Aluminum for anything. YMMV.