Thanks Crutchfield!

Lots of capability, but cal them when hooking up the harness if you have questions. I'm 70, so lots of questions and they answered all of them. Great product, great company (friendly most of all)

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PAC RP4.2-HY11 Wiring Interface

With wiring instructions from Crutchfield install couldn't be easier. Gave me full functionality of my steering wheel controls.

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PAC RP4.2-HY11 Wiring Interface

Product works great. Easy to install... with a little help from Crutchfield of couse

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PAC RP4.2-HY11 Wiring Interface

great

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PAC RP4.2-HY11 Wiring Interface

Overpriced item that doesn't work the wiring diagram is horrible. Not pleased with this purchase

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Best for retaining factory equipment

Great piece to keep all factory equipment functional (except Bluetooth) kinda bulky so have a nice area to mount it def takes up a nice amount of space

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PAC RP4.2-HY11 Wiring Interface

Easy install match wire colors and works pretty well. Had to program for steering wheel controls to work.

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PAC RP4.2-HY11 Wiring Interface

the PAC unit didn't work as well as I expected. some of this ties in with trying to add old tech with new tech

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GOOD PRODUCT

Everything worked perfectly!! You must hookup the hs-can to get the factory camera to come on when putting the car in reverse Easy Peasy just follow the directions. Just remember the factory harness does not have a 12 V key source and the red wire I had hooked up the radio to from PAC RP4.2-HY11 Wiring Interface would not turn the radio off and on.

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A bundle of wires

Wow, a little overwhelming when I first unpacked this device. Wires, wires, and more wires. The instructions are pretty good. I ended up needing only half the options. My car came very basic. USB didn't work had to wire direct from the radio.

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PAC RP4.2-HY11 Wiring Interface

It works finally. You have to really take your time to understand the information sheet, as they provide connection information for most wiring but not all and do not offer step by step instructions which is weird considering it was packaged for a specific vehicle type. Had to call Crutchfield and get on track and ultimately get a second one sent to me which caused a delay in the install. So a combination of user error, generic instructions and resulting delay for the install amounted to some frustration.

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PAC RP4.2-HY11 Wiring Interface

Easy Install

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Worked perfectly

Worked as described. Also, Crutchfield's provided wiring guide for installation makes it easy for first timers.

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Must have!

Absolutely worth the extra $$$ to get this done.

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PAC RP4.2-HY11 Wiring Interface

wiring interface save time and made it easier to install radio.

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PAC RP4.2-HY11 Wiring Interface

It worked perfectly right out of the box; firmware already updated. The USB didn't pull data, so I dropped the head unit's rear USB into the glove box. I will see if I can split it to get the factory port back for charging at least. SW controls work perfectly, except for the occasional "ghosting" ("gee, why is my volume going up by itself") - happened twice, it will stop with a tap of the control. My last one by a different manufacturer was worse - volume up might make playback advance or vice versa. Installation was simple and straightforward with just a connections. I have the ability to upgrade without having to purchase a new unit, if I decide to upgrade the head unit to a DVD, multimedia, or nav unit. I happen to like my Kenwood.

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Bad case design

The build quality is horrible! The case fell apart on me during install. They should use some adhesive or screws to hold it together.

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PAC RP4.2-HY11 Wiring Interface

Nice compact unit that ties the steering wheel controls to the aftermarket radio. Fairly straight forward wire connections. The first unit I received was defective. Crutchfield replaces the unit and the second worked like a charm. I took one star off for the original bad unit.

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Works great

4.5 stars, works perfectly only small issue the install instructions could be better.

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PAC RP4.2-HY11 Wiring Interface

Easy installation color-coded wires made it simple

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Does what it's supposed to do - instructions are not great

Does exactly what it is intended to do once you figure out the instructions. Thankfully the Crutchfield folks were available to help get it done right. Lots of advanced programming options if you want to change what the steering wheel buttons do. Biggest problem I had is that the only way to update the firmware is to use a Windows computer as there is no Mac support at all. Hope they fix that issue since I never plan to own a PC again. Again, does what it's supposed to do but just not very user friendly.

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PAC RP4.2-HY11 Wiring Interface

Loved the time I saved having to do it myself. The wiring harness was perfect all I had to do was plug and play.

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PAC RP4.2-HY11 Wiring Interface

worked great

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It simply just works!

The PAC RP4.2-HY11 simplified the wiring for my 2013 hyundai elantra while retaining all steering wheel controls. Simply soldered and wrapped the aftermarket harness to the PAC harness and it was plug and play in the car. As others have noted, the stock USB will only charge your device. It will not pass through data ie Apple CarPlay.

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Awesome Wiring Interface

I don't usually write reviews unless things are exceptional or beyond. This wiring interface is awesome. We kept all of the steering wheel functions as promised by the Crutchfield advisor.

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A 'Must Have" . . .

A 'Must Have" . . . saved much time and stress

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Kinda worked

I bought this because the site recommended it. Description said it would retain my Aux port and factory USB port. Unfortunately it did not. The PAC tech help said my head unit did not put out enough voltage to power it fully. The USB port would charge my phones, but would error out trying to use Android Auto or Apple Car Play. Pretty disappointing since my car does not have SWC and the only reason I bought it was to retain the Aux and USB. So I could have used the free harness and been where I am now. Not worth the time to tear the stereo out and try and return it...

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PAC RP4.2-HY11 Wiring Interface

Work for the steering wheel controls, didn't work with the OEM USB for apple car and the line for parking brake didn't work with alpine stereos

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PAC RP4.2-HY11 Wiring Interface

works like a charm!

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PAC RP4.2-HY11 Wiring Interface

easy to use and no rpoblem to utilize

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PAC RP4.2-HY11 Wiring Interface

The wiring harness worked great.

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PAC RP4.2-HY11 Wiring Interface

Everything just worked for my 2011 Hyundai Elantra, even the steering wheel controls. I just removed the dash and plugged everything in, def impressed.

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Great wiring interface

Was able to retain steering wheel controls and I really like the option to be able to program each control 2 different controls, a short press and a long press. Programming is simple and easy. Only complaint and I can confirm is factory aux does not work, factory usb does though. I don't really care though as I don't even use aux ever. The wiring was simple after reading instructions. This is way better than the metra axxess bull crap

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USB Not Functional

I primarily purchased this rather expensive wiring harness to retain the factory USB port in my 2011 sonata. While it does charge my phone, it does not pass through any data, so using it with Android Auto required instead running a USB cable through the glove box.

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Great add on to keep steering wheel switches

Gave me all of my steering wheel factory buttons on the new radio.

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PAC RP4.2-HY11 Wiring Interface

Allowed me to retain my steering wheel controls, factory USB, and plugged right in to my factory harness. I am sure it would have allowed me to retain the factory AUX input as well, however the added adapter required stuck too far out of the back of the radio. I may look for an L-shaped adapter and try again. The unit worked for my 2015 Genesis Coupe right out of the box. I am sure that I could have made the harness much more user friendly by removing the unnecessary wires and connectors but was leery about cutting anything in case any conductors were looped through somehow. I just pulled, pushed, and skinned my knuckles until I was able to work everything into the dash.

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13' Elantra pac module

Works good, couldn't for the life of me keep the stock usb function but everything else works great. Also it's kinda big so you gotta get creative when tucking the module behind a double din. Don't forget to update the firmware as everyone has stated, it won't work if you don't

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PAC RP4.2-HY11 Wiring Interface

the interface recieves/acknowleges all steering wheel contorls. However, either the device does not communicate all the commands correctly to the head-unit, or the head-unit does not interpret all the commands from the interface. Either way, the description said all steering wheel controls would be retained

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PAC RP4.2-HY11 Wiring Interface

Two years ago I decided to install an aftermarket head unit in my 2011 Hyundai Sonata. I picked out my HU and it said I needed a SWC adapter + a module to retain my factory amplifier and recommended ones from Axxess/Metra. I bought all of the parts and did the install. Long story short, it didn't work. No sound, and only a few of the steering wheel buttons would work. They agreed it must have been DOA so they sent me another set. Same issues. I then drove to Charlottesville, VA so the Crutchfield store could take a look and they too could not make the parts from Meta work. They even ordered a 3rd one and had Metra apply custom FW on it, still nothing. I did research and found this part (the PAC RP4.2-HY11) and asked if we could try it. At the time, Crutchfield did not sell it so I had to buy it somewhere else. They installed this PAC adapter and everything worked on the FIRST TRY! Fast forward two years and I'm thinking on ditching my rear speakers and installing a set of active components in the front. I plugged the device into my PC to change the fader settings and all 3 of my PC's would not work with it anymore. Somehow in the process I also reset the steering wheel settings and all buttons got mixed up. No matter what I did to reset or reprogram it, it was toast. So I went on Crutchfield's website and yay they sell it now! I ordered this same part again, did the FW update and it was plug and play! I'm still not sure why Crutchfield lists this as not compatible, but it works!

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PAC RP4.2-HY11 Wiring Interface

The installer had to download an update so the steering wheel hand controls would work. We should have had something with the product giving us a heads up on needing to download an update.

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PAC RP4.2-HY11 Wiring Interface

easy to install, had no problems. everything works perfectly

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Easy install

Plug and play

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So nice to use the steering controls

This is so nice you can use the factory buttons. 2013 Santa Fe Sport

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Interface works fine

This was the interface recommended by my installer. Works flawlessly.

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after firmware update, works perfectly

this kit, along with the faceplate, made the radio install very smooth. i soldered/heat shrinked all the connections, except for the 2 connections to the obd port. without the help of the techs at Crutchfield, it would have taken me a lot longer, and possibly i would still be trying to get some of the features to work. the one problem i did have was with the swc module, RP4.2-HY11. the first one was dead. the second one would not interface with the steering wheel controls. when i got the third one, i called radio pro, and spoke to a tech there. i was told that the firmware needed to be updated. their website has the firmware, and the app needed to install it. very suspicious, the firmware update is 2016, one would think that the module made 2 years later would have the update. looking at the firmware updates. there is an update for virtually EVERY module they have, i think what they get is a basic module, and it is up to the owner/installer to update the firmware. after updating, it now works perfectly. i passed this info on to the last person i spoke to at crutchfield.

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PAC RP4.2-HY11 Wiring Interface

Had problem initially with control box burning out but crutchfield awesome customer support saves the day. Unit allows retention of factory installed features like usb and aux connections

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High Hopes, But No Love Here

This does NOT work with my 2015 Santa Fe steering wheel controls. I had it professionally installed and programmed, and it worked for 1 drive home. The next morning it had lost all of it's programming and none of my steering wheel controls worked. Took it back to the installer, double checked all the wires, reprogrammed it again, same results, worked once and lost it's mind. Crutchfield is awesome, and sent me a second unit, thinking there was a problem with the first one. Had the second one installed, and same results as the first unit. Returned it for the Maestro ADS-MSW, and will review it once it has been installed next week.

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easy to use

Easy to hook up Blaupunkt San Jose to 2013 Hyundai Elantra

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PAC RP4.2-HY11 Wiring Interface

never worked. even had a 2nd box sent to me, which also, same issue, never worked with my SWC. pretty disappointed. i liked the radio, and everything, just dont realize how much you use your SWC until you dont have them.

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PAC RP4.2-HY11 Wiring Interface

Great product

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Slow But It Works

All of my steering wheel controls work but they seem slow and almost unresponsive sometimes. But overall it works well.

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