The contacts that revolve with the steering wheel and the
stationary plate they ride on attached to the column are
the clockspring assy as far as I know anyway.
My cruise went South, and I was able to find that assy
by advertising on the various Mustang board classifieds,
emailing guys that were advertising steering wheels, etc,
and looking on ebay and emailing guys that were advertising
steering wheels etc there.
I picked up a good used assembly, both parts, for
$25.00.
Might be good to pick up a used set of buttons/swtitches
in case you need them when you got your steering wheel
assembly apart / off. Found them the same way as I
did the clockspring / contacts.
On my 89, the same fuse runs the horn and the cruise.