Conversation so far:
Are there any other interesting aspects about this Illyrians article?
Modern scholarship is unable to refer to the Illyrians as a unique and compact people and agrees that they were a sum of ill-defined communities without common origins.
What scholarship says that the Illyrians did not share common origins?
Modern scholarship
Did modern scholarship on the Illyrians influence anything?
Older Pan-Illyrian theories are now generally dismissed by scholars, based as they were on racialistic notions of Nordicism and Aryanism.
Where did the Illyrians orginate?
Alojz Benac and B. Čović argued that the 'proto-Illyrians' had arrived during the Bronze Age as nomadic Indo-Europeans from the steppe.
Were the Illyrians a mixed blood line?
It is generally assumed that the Illyrians originated from an Indo-European group of nomadic tribes.

Question: Where were they located?
Self-contained rewrite: Where were the Illyrians located?