I noticed many people were asking about this and for most new taurus buyers its the first mod they want to do. My setup was already installed to I kinda took eveything apart to show you whats what.
Ok first thing you need is your aftermartket kit for the gen 4 there are 2 choices. You got the merta kit or the scosche. I went with the metra becuse imo it looks better. Ok so go grab a wire coat hanger and brake it into 2 peices and then bend em in a horse shoe shape untill you have something like this. These are your keys. Using coat hanger method takes patients, so take a deep breath, relax and go slow.
Now that you have the keys made pop em in the holes and take out the factory radio. Unplug the factory wire harness its on the left hand side of the radio.
Next make sure you have a ratch set handly mainly you'll need a 3/16 socket and t-25 star bit. Locate the climate control knobs on the back and with the 3/16 socket remove all 3 peices. Be sure to remove the knobs from the front first. Then remove mounting clips with the t-25 star bit and install them on the aftermarket kit.
Toss that factory bs aside and grab your aftermarket kit! install the 3 climate control knobs to the back of the aftermarket kit. Like so:
Now locate your factory wire harness:
and your aftermarket kit wire harness: (While your in there you might as well attactch your amps remote wire. If you have an amp I highly reccomend you do this that way when you turn the key your amp turns on.
Take and plug them together. And get ready to do the airbag mod (Only for 2004+ models). What you need is a 10k resistor and some t clamps. find the brown/blue wire and the red/yellow wire.
Stip some of the wire covering away and connect the airbag light mod.
I choose to use a din which imo is better than them gay plastic deals they provide with the kit.
Pop your stereo half way in and run your speaker wire harness from the trunk to behide the radio. All you need to do is match the colors up its not hard. Don't forget to run your antenna wire as well. Tape off all the wires that you dont use. If you got pre amp out puts like me attack your cables that go to the ampo. Pop the radio into the dash and your done.
And for those that don't like listening to your subs while on the highway or you just wanna save power while on them long trips. Id install a cut off switch.
This allows you to turn off your amp w/e you like. Remeber if you attached the remote wire it will turn on/off with the turn of the key. Putting the switch in just gives you that option of turning your amp of when you dont want to listen to the subs, ect
Hope it helps some of you guys.