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I bought this adapter for my ipod (http://indashpc.org/new/ipod_adapters/grom-ipod-chr.html).  It plugs into the CD changer port in the back of the stereo.  It was working fine, then all of the sudden, the A/C stopped blowing cold air, the power windows wouldn't work, the diagnostic center just displayed dashes in every field.  Some of the electric stuff still worked (sunroof, power seats).  I figured it was a fuse, so I checked everyone I could think would be the problem, but they were all fine.  I unplugged the adapter, but left it behind the stereo and still had problems.  I finally took it out of the dashboard, then later that day all the broken electronics started working again.  I have no idea what the problem is.  Help!  

Hey I have had the same problem with my 2004 Grand Cherokee. . . This is not an isolated problem with the GromAudio Ipod adapter. It has caused an electrical problem with my locking system. Someone please shed some light. . .  

vandyjeep:
I bought this adapter for my ipod (http://indashpc.org/new/ipod_adapters/grom-ipod-chr.html).  It plugs into the CD changer port in the back of the stereo.  It was working fine, then all of the sudden, the A/C stopped blowing cold air, the power windows wouldn't work, the diagnostic center just displayed dashes in every field.  Some of the electric stuff still worked (sunroof, power seats).  I figured it was a fuse, so I checked everyone I could think would be the problem, but they were all fine.  I unplugged the adapter, but left it behind the stereo and still had problems.  I finally took it out of the dashboard, then later that day all the broken electronics started working again.  I have no idea what the problem is.  Help!

Hey I have had the same problem with my 2004 Grand Cherokee. . . This is not an isolated problem with the GromAudio Ipod adapter. It has caused an electrical problem with my locking system. Someone please shed some light. . .  

Bad news guys, I had the exact same problem. I bought the adapter, plugged it in (all acording to Grom's specs), and it worked fine for about a week. Then my key light came on then off the on then off. Eventually my windows, steering wheel radio controls, air conditioner, automatic lights, and lights flashing when I lock/unlock the doors via the FOB all died. I am a car guy and asked around nobody could figure it out. I took it to my mechanic and he couldn't figure it out so he sent me to the dealer (bad already). The dealer said that the body control module died and $1,000 repair! I did it what else was there to do. I was hoping the the Grom adapter had nothing to do with it until I found this forum. I'm not quite sure what to do now, acroding to http://www.gromaudio.com/compatibility.html it is compatable with our vehichles however it obviously isn't. I wish there was a "will damage your car disclamer".

Hope this post helps
2003 grand cherokee limited w/infinity sound  

I had this same thing happen on Sunday (102 degrees here) so no A/C was a big pain.  My ipod adapter has been installed for about 2 months with no issues.  So until I read this post, I didn't even suspect it was the issue.  I removed it and nothing happened.  Today I disconnected and reconnected the battery and everything worked again.  Try this before you go to the dealer.  Hope this helps someone.  

I contacted gromaudio and they sent me a new chip with updated firmware. nothing changed. does anyone know of another adapter that has doesnt interfere with electrical system in the WJ Jeeps?