New Head Unit Install Question

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I'm looking to install the following headunit into my 2004 ST:



http://www.crutchfield.com/App/Product/Item/Main.aspx?cc=07&g=182350&i=130AVICD3X&c=3&tp=526



I already know i'm going to have to do a little shaving to make it fit, and I don't have a problem with it. My question is - what wiring changes am I going to have to make? I currently have the 6-disc pioneer CD change with factory woofer behind the back seat.



Can I still make use of this, and what about the factory Amp.



Thanks in advance.
 
Not true.... You only need to rewire all your speakers if you install an aftermarket amp. Best Buy had all the wiring connectors/kits needed to use a factory sub ampwith an aftermarket head unit. You just 2 sets of RCA's cut one end off and splice into the factory sub wires. You will also need a voltage regulator to eliminate the turn on pop for the sub though. Radio shack has them for a couple dollars. Here is the wiring diagram.



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One more question, since it is already a Pioneer head unit and I will be installing another Pioneer unit will I need a wiring harness adapter? The one crutchfield recommends is below but I don't think it's right:



 
One more question, since it is already a Pioneer head unit and I will be installing another Pioneer unit will I need a wiring harness adapter? The one crutchfield recommends is below but I don't think it's right:



 
Ok I found the responses regarding the woofer, but someone from Crutchfield told me i'd have to rewire all speakers to go around the factory Amp.... true?



Gah. Crutchfield has a harness that will power both the speakers and the sub/amp. That harness (linked) is NOT it. There is no need to rewire. Give me an hour or two and I will expound more fully, including installing, matching the silver of the bezel, etc.. I need to unload a kayak, etc.



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Sorry for the delay. I added a second kayak to my arsenal tonight, and also mounted the Yakima rack I bought from another MyST member (and added kayak cradles). I'm shooting for a ST of the Week photo tomorrow while at the lake.



That being said...



Things to know:



- Mounting Kit: Scosche FD1330B. It includes side mounting plates, a rear piece that attaches to the rear of the HU and slides onto the OEM track (that the OEM radio slides on), and a filler plate that has 2 single DINs but can be clipped out to fit one Double-DIN (what I did). The paint is noted below. To match, I took the filler plate, sanded it with (what I recall) 1000 grit sandpaper until it lost its texture, washed it, and then sprayed it with three or four coats to fill any sanding grooves, etc.



- Paint: From AutoZone. Dupli-Color DARK GRAY (M) CC, UPC 0-26916-80564-5, cap color number E8800564. It's what I call a 98% match. Because it's metallic, if you hit it with a halogen, it'll refract the light a little differently than the '04 bezel. But, for all purposes--in daylight, at night, etc., the match is dead on.



- Harness: http://www.crutchfield.com/S-9Sh51Dlkred/App/Product/Item/Main.aspx?g=103000&i=120705521&tp=2977. This is meant for the 6CD Changer (non-Adrenalin) with subwoofer. It includes everything you need to fire the sub (note the little harness with RCAs).



- Transistor: http://www.dennisjudd.com/?p=685. This link is most helpful. And the transistor, as noted above by Chad (who helped me with this problem--thanks Chad!), will stop the sub from popping. Aftermarket HUs fire at 12v, while the Ford uses 5v. Easiest way to install it is to take the blue/white (sub remote on) from the new head unit, slice it, run a wire to the transistor, ground the transistor, and run a wire back to the new head unit's harness. If you notice, the Crutchfield harness has two blue/whites. You onl need one; however, I joined them when I tied into the new head unit harness (note that I spliced the transistor into the HU harness [from the radio to the Crutchfield harness, which only has one blue/white] and not the Crutchfield harness; this gets around the two wire issue when cutting and rejoining). It will not hurt anything. As for mounting the transistor, to the right of the radio area in the dash is a metal dash support. In the center, there is a small hole. You can use a small bolt and nut to attach it. To do so, pull down the glove compartment and reach up to hold the bolt as you tighten it.



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- Mounting the new unit: Home Depot has the screw sizes you'll need (I forget exactly, but they're weird sizes and very shallow lengths for obvious reasons--i.e., don't use a pointed screw to go into the unit, etc.). Check the manual, and look through their screw drawers (usually have four to a pack). To make mine a little different, I went by the stated screw sizes (millimeters in depth and thread type), but used hex screws with washers (to spread out the stress on the install plates that attach to the side of the radio). To each their own.



- Wiring: I recommend soldering and headshrink tubing. Radio Shack has the tubing (get it while getting the transistor) and soldering is not difficult. However, you also can twist and tape or use wire crimps. But, again, I recommend soldering. If you've never done it, it's really easy, and with the tubing, makes for a very, very clean install.



- Bezel: You WILL have to trim it to make a DDin fit. Follow Sal A's project (listed in the menu choice to the left). To keep from damaging areas I didn't want to Dremel, I masked the entire bezel with masking tape (and I mean the WHOLE thing--covered the vents (keep out plastic shavings), etc. After I was finished trimming and untaping, I then washed it gently. Let it air dry before reinstalling,
 
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The question was asked if, since the OEM radio was made by Pioneer, if the harness was necessary. With the exception of the STX F150's that had the Kenwood radios, the OEM radios are not wired the same as the aftermarket ones regardless of equipment suppliers. All vehicle manufacturers give contracts to each radio manufacturer and give them the specifications and wiring connector setups they want or need for their vehicles. The STX F150 was different in that Ford actually used the regular Kenwood and that is why thieves look for those three little letters on the side of F150's. So, yes, the harness IS necessary.
 
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