It would be one of the units that would have been available for the 1990 Imperial and such vehicles. ----- Original Message ----- From: "Stevan Miner" <miner@xxxxxxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Sunday, November 23, 2003 5:50 PM Subject: Re: IML: Radio Wiring Diagram Hi Brad, Do you know what year of car the Infinity radio came out of? Or even close to the year. I can print out the schematics and fax it to you if you'd like. I'm pretty sure you're right about the external amps for the speakers. It would probably work with regular ones but you wouldn't have alot of volume. Steve Miner Miner Auto Service Winnebago, MN