Volkswagen Repair: 99 Passat Wont Smog w Aftermarket radio, aftermarket radio, market radio

Question
During CA smog test,OBD ll sensor can't communicate because of an after market radio being installed.I heard about this problem, but I haven't found a solution. I read something about the K-wire needs to be isolated from  12 volts. Any advise is appreciated.

Answer
Hi Chris;
I know this is true, too.  I haven't actually done it myself, so I can't tell you how.  I can get further information from my boss.  He has nearly limitless information stashed away in his head.  He also has 35 years experience on Volkswagens, so I'll ask him.  Next you'll want to know which one the "K" wire is.  I'll e-mail this to myself, and get back to you with much more specific information on MONDAY.