This is how I added Bluetooth to 2007 Ford Taurus SE sedan factory audio system.
|9||Dk Blu/Wht||+R||RCA jack right +|
|19||Gry||-R||RCA jack right -|
|10||Wht/Pnk||-L||RCA jack left -|
|20||Brn/Lt Grn||+L||RCA jack left +|
|1||Blk||GND||Bluetooth ground (blk)|
|Bluetooth power (red)|
Playing a CD selects the Bluetooth input. "Real" or silent CD doesn't matter because the CD player audio is disconnected.
Essentially the in dash CD player is replaced by the Bluetooth input.
AM/FM radio still works because it is actually in the rear control unit (RCU), along with the amplifier, that is mounted in the trunk.
Audio quality is on par with CD.
CD functionality could have been retained by using a 4PDT switch. Don't need a CD though when entire music library is at fingertips.
The iSimple MusicStream ISBT23 Rev. 2 Bluetooth device was selected for the following reasons:
Added power filter, in fire proof enclosure, to remove alternator whine and reduce hiss:
|VPwr (switched) —› 39 Ohm 5% 5W Wirewound —› 470mF 25v —› Gnd|
|red wire (+ positive) connected between the resistor and capacitor|
|1/2" x 2" iron pipe with end caps|
Integrated Control Panel (ICP) Audio System Connector Pinout
|1||Blk||GND (behind center of dash)||11||Wht/Red||VBatt (hot at all times)|
|2||Dk Blu/Wht||Illum Out (interior lights system)||12||Blk/Yel||GND (behind center of dash)|
|3||Tan/Lt Blu||Disabled Ind (supplemental restraints system)||13||Lt Blu/Pnk||+ ACP (audio control protocol)|
|4||Lt Grn/Blk||ASYSON (audio system on)||14||Tan||- ACP (audio control protocol)|
|5||Red/Yel||VPwr (hot in start or run)||15||Gry/Red||?|
|6||Blk/Pnk||VPwr (hot in run or acc)||16||Red/Yel||VPwr (hot in start or run)|
|7||Dk Grn/Vio||Defrost Relay (defogger system)||17||Dk Blu/Org||Defrost Switch In (defogger system)|
|9||Dk Blu/Wht||+ Right Audio||19||Gry||- Right Audio|
|10||Wht/Pnk||- Left Audio||20||Brn/Lt Grn||+ Left Audio|