well fella's ...bad news ...sort of. I recieved one of these already from discount car stereo and had it installed last week and...........nothing. I called them to send a replacement thinking the unit was defective right..............well its not...theres a glitch in it......jsut recieved the following email from discount car stereo
"We are in the process of notifying our Mustang customers of this issue and has temporarily remove the option from the product compatibility list.
Here are some issues we have addresses so far:
http://www.discountcarstereo.com/pdf/frd04-aux.pdf
PIE Tech support department wants you to know---
"We are aware of a small glitch in this part when used in a *2005 Mustang. This glitch is not something
PIE found during testing of this part before its release.The glitch has to do with the 16-pin aux-port of the radio being occupied. This connector houses 2-wires. This harness must be disconnected before the radio recognizes the FRD04-AUX interface; once the radio recognizes the interface this harness may be reconnected. Once the vehicle's ACC voltage is cycled or car sits for about 15-20 minutes. The radio will loose recognition of the part.
An immediate/temporary fix for this is to leave the factory 16-pin connector disconnected from the FRD04-AUX harness. This will allow the part to work with out any problems. However, the radio's dimming function will be permanently activated and the radio's speed sensing for volume compensation will deactivate.
This part is the first in the 12-volt industry. We took all the precautions necessary to avoid this from happening by field testing and confirming compatibility with every model listed. We even had 8 or 9 prototypes installed in different vehicles. Including a 2005 Mustang with the shaker 500 audio system. Here's a link to one of those 8 or 9 vehicles, (it happens to be the 2005 Mustang with the shaker 500) I'm sure you have seen it before.
http://members.tripod.com/2005stang-auxbutton/
We are investigating this issue and are working on being able to duplicate/pin point the where the problem is. Once we do that we can determine the intensity of he fix. At this moment there is no ETA for this fix...
Discount Car Stereo.com will be monitoring the situation and will update 2005 Mustang customers when a permanent fix is available. We apologize for the inconvenience
SOOOO....I am going to install the newone tomorrow using their temp fix and wait on the real fix to be completed.....OHHHH and by the way , the guys at discount are first rate...the best costomer service I have experienced in a VERY long time