This worked well with my Pioneer AVH-4200NEX.

works great on my AVH-4100 Nex stereo, have been using it for a couple of months now and works every single time, I use mp4 on a memory stick for music videos while I drive and the bypass works great.

Simple install and works perfect.

Nice work coming up with this thing.

This was my first harness wiring effort, and the instructions worked great for the Maestro harness I used.

This worked great for Pioneer AVH-4100 head unit, totally removed the locks on VIM.

This works wonderful with my 4200NEX.

Extremely easy to install works like it should amazing

This works for the Pioneer AVH 2440 NEX double din

Super easy, works perfect

Super easy, works perfect

Easy hook up an works as advertised.

This worked perfectly - easy to wire into the harness.

Who doesn't like a work around?