I have a question which I hope someone can help me. I purchased the Soundstream PN1.650D to fit under my driver seat next to the factory ML amp. The Soundstream amp has high-level input which I want to use. The high-level input has 5 wires. Can someone please help me identify where I need to splice these 5 wires into? My ML factory amp has two pigtails connected to it. I assume one is output and one is input. 2006 GX470 Mark Levinson

 

Take a look at this video, fast forward to the 1:27 mark. If memory serves me the two plugs on the left are going to be your amp output wires that will lead to your factory speakers. I'm not too familiar yet with factory Toyota radios and if they have balanced signal output, or are basically sending a "data" signal to the radio which the amp then processes and sends the correct signal to the speakers, but you may just have to cut the two plugs I mentioned and run the output of those to your Soundstream amp, and then back to the speakers.

So in essence, the audio signal path would look like this: Radio-->ML amp-->Soundstream-->Speakers.

 

Probably help if I actually gave you the link lol.