Metra70-5521 Radio Wiring Harness for Ford 03-Up Amp, computer

Does what it's supposed to do. Fits great ..easy to install.. good value for the money

Perfect fit, direct plug in for 2005 lincoln ls sport 3.9l to pioneer dev-1500nex

Hooked it up and works great.

Artículo bueno,lo use en mi Mustang 2005.

Just bought a ‘04 Lincoln Town Car and didn’t know wether it had an amp/sub or not(couldn’t speak with original owner as it was purchased through a family member and the manual was missing) so I went with this harness because if I didn’t need the amp out harness no big deal, but if I did...well then I’d need it lol. The harness itself is perfect for what it is, a simple harness to prevent cutting and splicing the OEM harness, wires were clearly marked and colors matched the harness for the after market stereo. Went with the Pioneer AVH-X490BS, if you get a pioneer look into getting the parking brake bypass switch.The only problem is that there was nowhere to connect the two blue wires on the harness with the RCA plugs, so I assumed I didn’t need it and just didn’t use it. Reconnected negative terminal on battery and tested radio and it worked great so I figured I was right. I go to install the Infinity Kappa speakers in the rear deck(btw if you have a Town Car be ready to take out the entire rear seat, both bottom and rear cushions to get access to the speakers......) and guess what I see?? A sub and amp.... I was planning on getting an amp for the speakers anyways, and maybe a 8” sub just for a little bass so I’ll just wait to get them rather than hook up the factory amp/sub.If you're replacing a radio you can’t go wrong with Metra, always quality products. Been using them as long as I can remember, and between work, my personal vehicles and friends/family I’ve installed more car stereos and speakers than I can remember and never had an issue with Metra.

Used to replace stock unit. Wired to replacement Kenwood head unit perfectly. I'm not exactly gonna say something bad about the product. Problem with my situation that this product lacks is a 12v to 5v step down convertor for factory amp reference signal. Otherwise it's OK.

Picked this up to swap out a malfunctioning head unit from my 2006 Focus ST that was equipped with the audiophile stereo package... the harness for the main head unit was a perfect fit and worked perfectly. the harness for the subwoofer option plugged right in but when it was all said and done the subwoofer was making a LOUD buzzing sound that drowned out music unless you had the volume up way past what I would normally listen to. I fixed this by installing a switch in the "remote line" of the head unit to "turn off" the subwoofer when driving around town with the radio volume down. But that annoyed me more because anytime i was driving anywhere other than the highway (with a lot of road noise) there was literally NO bass on the stereo.Did some research and found that the adapter harness was made incorrectly for my application. there are 8 open spots on the harness connector and my two blue wires (for power and ground) were both on the far left of the connector top and bottom. the blue wire on the bottom was the "system ground" and was in the wrong place. I used a small screw driver to unpin the connector and relocated that wire to the #2 pin position replugged it all in and it works perfectly. Buzz is gone and im finally happy with the install.This ISNT a hard fix at all (i used a tiny screw driver and it took maybe 60 seconds to unpin and slide the wire back into the right port on the connector) but the time it took me to figure it out was kinda crazy. Just a warning that you may have to do this too for your install.Ive included a photo of what the CORRECT pin out should be for the connector...The Connectors pin out is as follows. (as purchased)1234 1: POWER 2: EMPTY 3: RCA+ 4:RCA -5678 5: GROUND 6: EMPTY 7: RCA SHIELD 8: RCA SHIELDThe CORRECT connector pin out for a 2006 Focus w/ Audiphile Stereo Package is as follows. (as modified in the image)1234 1: POWER 2: GROUND 3: RCA+ 4: RCA-5678 5: EMPTY 6: EMPTY 7: EMPTY 8: EMPTY

Metra 70-5521Crutchfield claims this kit does not exist or work on my 07 Mustang with the Shaker 500, and insisted I purchase an expensive PAC kit that requires soldering a diode.With the 70-5521, there are 2 harnesses. The large one is for the main radio harness, the smaller one is for the Shaker 500 subwoofers. You will need a LM7805 or equivalent voltage regulator to convert a 10-15 V signal into a 5V signal.The LM7805CT voltage regulator was needed because the Ford factory Shaker 500 amplifiers require a 5V turn-on signal, while aftermarket receivers use 12V turn-on signals for the amps. This results in a pop or overload of the amp turn-on. The LM7805CT seems to do the trick, and I was told by other Mustang owners not to worry about heatsinks or cooling the regulator because the current/power dissipation isn't that great.I also observed that it was definitely possible to tap into the light/illumination leads for either the message center harness or the HVAC harness to enable the dimming feature on the CX501, but I opted not to touch the factory wiring. The main factory harness does NOT have a power antenna (solid blue), amp turn-on (blue/white) or phone mute (brown) so those must be sealed/wrapped off on the big Metra harness. The smaller Metra harness that goes to the Shaker 500 will have a pair of amp turn-on leads (blue/white) that attach to the OUTPUT side of the LM7805. The INPUT side of the LM7805 goes to the amp turn-on lead coming from the receiver harness. The RCA inputs for the Shaker 500 subs go to the appropriate RCA jacks on the back of the receiver. I soldered all of the ground leads together which goes back to the receiver harness ground lead.I used solder and heatshrink wrapping and can confirm that this wiring kit will work on a 05-09 Mustang (or at least the 2007).Overall: 5/5 stars, very inexpensive, not hard to use, just remember to buy a 5V regulator from Radio Shack - I opted to buy my Fairchild LM7805CT from Digi Key so that I knew I was getting a quality regulator.

El arnes quedó a la perfección, muchas gracias solo que al querer conectar el arnes chico mi camioneta ya no trae el conector macho que es para el subwoofer de fabrica que trae la camioneta la cual es una explorer eddie bauwer 2005.

I used this to install an aftermarket stereo in our 2010 F150 with no Sync. I searched many places and couldn't locate the correct harness for my truck. I could tell physically this would fit so I used it, however I know it's not intended for my truck.That said all speaker connections were perfect, yellow memory and ground matched, only the illumination wire didn't match so I moved that pin.Great quality and worked well.

This just arrived after waiting patiently for its arrival from the USA. Unfortunately this does not fit the Ford Explorer 05 as stated. Good quality item, but clearly a waste of time and money as seller is USA based, this isn't worth a return!

Se instalo en arnés original de lobo lariat 2004 para estereondoble din sin ocasionar cortes en arnés original

Worked great on 2008 ford f150, easy to follow instructions.. Lots a youtube video to check out aswell