|Where to find "Almost-New" parts:
Auto Parts Haven (eBay Store)
Ecaronline (eBay Store)
Searching on the keywords "cadillac module" or "aurora module" will find most of the relevant items. Some items may not
even have "ignition" in the title, so it pays to check them all. Some that have a matching title will be for the
wrong model, so double-check the part numbers. The ignition module number may read D1980A or D1980-A, although the first
is the proper designation.
Where to find used parts:
Car-parts.com is a searchable database of thousands of junkyards nationwide.
acdelco.com is another searchable database that will give you a list of every vehicle that used a specific component. Seems to work best with Internet Explorer, although it now works somewhat with Netscape (it didn't used to work at all).
Autozone carries replacement parts. All aftermarket modules appear to be made by Delphi (OEM).
Advance Auto Parts has more replacement parts.