PAC RP4.2-TY11 Radiopro4 Ty11

I installed this with a JVC 2660, and it's working great in my 2013 Toyota Highlander. Don't let all the wires scare you. Mostly, it's putting colors together, and these come with way more than they need. It's not too bad at all. I used Posi twist connectors for my wiring. They are super easy and are working great for me.

After struggling with the alternative harnesses, I found this one. Seriously, do not waste your time with the other options. This one retains functionality of the NAV unit and HVAC controls.

Replaced the JBL head unit in my wifes 2011 Venza and this worked perfect. You can still use fader front to back and left to right. Also kept the steering wheel controls. Only thing was it came with older instructions that didn't really clarify how to connect steering wheel control wires. (Missing 1 wire color connection) After going onto there website and looking up the model, the proper updated instructions were found. The swc ground wire is already grounded so no need to worry about that. Just connect key1 & key2 wire to proper vehicle harness wires and you should be ready to go. That was the only confusing part but ended up being so simple in the end. I Overthought it! Lol Oh and make sure the little plug is in the unit good. I had to pull head unit back out a few days later after losing sound to some speakers. I ended up just pushing the little plug on the side of the module in a little more and problem solved..

As much as the generic media player i used it on, but works well, allowing the retainment of several OEM functions.Installed a PLZ 7" android auto system in a 2010 prius. Worked well in allowing the use of steering wheel controls. Couldn't retain the use of the OEM rearview camera, but I believe that's because the OEM camera runs on 6v instead of 12v.

This item is trash. For $90.00 you would expect this to work properly but it does not. Sound cuts in and out on all speakers after being installed for 3 days. It's shipped from a 3rd party seller so if you want a replacement you have to tear your dash apart and leave it apart for however long it takes to get the new one or put it back together without the harness just to take it back apart again. My car is a 2008 prius with JBL and navi. Maybe the Metra TYTO-01 will work better but the reviews say otherwise. I don't recommend this product unless you don't care about the quality of your sound and often only hear sound coming out of 1 speaker at a time.Update on 10/01/17 - I ended up having to bypass the factory amp in order for everything to work properly. I only recommend purchasing this if you plan on bypassing the amp as well. At least in a 2008 Toyota prius. It works well as an interface for an aftermarket radio but causes problems with the factory amp. No problems from the MID yet.

Took googling and guess-and-check to fully get set up. Optional connection points weren't documented to specific vehicle configurations, and specifications of each port's pinout would have been welcome.Successfully controls the fader in my 2009 Camry by detecting differences in input volume from stereo, provides chime and steering wheel control (SWC).Expect an hour at least to get it all set up including dialing in the gain and configuring SWC if the stock config isn't sufficient.

Quality producteasy wiring and install in my 2006 Avalon XLSGreat value and best price on the internet.

2008 Sienna with JBL and voice nav; Atoto S8 Gen 2 Ultra. It has a bulky multi-connector harness they want to work for all manner of Toyota, with multiple connectors you don't use (but need to stow behind the dash, the unused connectors are not detachable/modular). This makes the unit a bit unwieldy to handle while assembling to the radio connector, and awkward to get stowed in the dash.First one wouldn't output steering wheel control signals, and troubleshooting was painful (long waits for tech support, no written help, unclear manual, etc) but Amazon swapped it for a replacement the next morning and the new unit plugged into the harness and those controls worked.The RP4.2-TY11 wiring harness didn't include the connector to pick up the reverse, parking brake, and speed sensor wires from the existing 5-pin gray connector in the dash for the OEM radio, so I tried the included RP4.2 ODB pickup to get those signals ... this seemed to work but the next morning I had 3 spurious "camshaft positioning" error codes, and my battery was dead! (After a very very long wait, tech support told me "I haven't heard of that before" and didn't offer any advice.) Anyway, I didn't like that it was occupying the ODB pickup spot, as I want to leave a bluetooth ELM27 plugged in there, so I tossed the RP4.2 ODB option, cleared the codes, recharged the battery, and manually connected from the factory wiring direct to the radio and I've had no problem with vehicle battery or error code since then (it's been a few days)The RP4.2 provides OEM camera power, which is nice, but no adapter from the factory wiring to the RCA jack needed for the OEM camera to feed the Atoto; I had to get another (Axxess) harness for that, and it includes a 12V-to-6V converter anyway, so in the end the RP4.2 doesn't help with the OEM camera.I've lost the front/back fade control from the radio "sound field" controls - tried with "real time fade" control both off and on, but if I shift the sound field towards the rear I get just reduced signal all around - shift it all the way to the rear, I get no output at all. I just made sure it was centered before disconnecting the factory radio, leave the Atoto centered, don't mess with it. For our two-person usage that's irksome, but not fatal; might be an issue if you carrie passengers, I guess.Sound quality seems reduced (harsher), to me, but RadioPro told me they "don't alter the audio" so I guess that's a difference between the Atoto and the OEM (Denso) radio. But I'm not clear on how the RP4.2 "doesn't alter" the audio, whilst providing controls in the app for adjust equalization (treble, bass, balance, etc) - that must be something to do with controlling the factory amp?In the end, after three days spent assembling, installing (multiple times), troubleshooting and configuring my setup is working well enough. The unit, with all its wiring, is jammed into my van's dash (I'm glad the Atoto is a shallow/small unit so there's room!), I have adequate sound coming from all 10 of the factory speakers, my steering wheel controls work, and I've learned a fair bit about how the van's audio system operates.