N2 bypass is easy and noone should try and solder it can ruin your unit
First off you will need to purchase a circuit writer pen. You can purchase them at most electronic supply stores. The ink, or paint, inside the pen is electrically conductive and it will work perfectly for what we are going to use it for.
Once you have the pen, you need to take the AVIC-N2 head-unit (not the brain) and turn it upside down. On the bottom of the unit you will see a silver sticker approximately 1” by ½.” Remove this sticker, and you will see two small circuit board contacts.
You are going to connect the above two contacts with the circuit writing pen. Make sure that you shake the pen well and test it on paper first to ensure that you get a good flow of ink and to familiarize yourself with the size and thickness of the line that you are going to be “writing.”
It is VERY important that you connect ONLY the two small contacts with the ink from the pen. Do NOT let the writing from the pen touch the metal strip above the contacts as it will ruin your unit. That metal strip and the metal of the head-unit chassis is the cause of many defective units from people using the soldering technique. I have personally had to replace three AVIC-N2’s due to improper placement of the solder drop. Fortunately I work in the mobile audio industry and the cost of the units did not come out of my pocket.
Please be very careful when you do this. I can’t stress this enough. It is very easy to do, but one slip can ruin your unit, and I (and you!) do not want you to ruin your Pioneer. Once you take off the sticker you will see how small the area is that you are working with, and understand how difficult it would be to use solder.
That is all there is to it! Once the contacts are joined with the ink from your pen all you need to do is reconnect your unit and it will no longer automatically shut the video off once your speed reaches 15mph +. You will still have to ensure that your parking brake wire is connected to a switch so you can trick the unit into thinking that the car is parked.
let me know if you need another AVIC bypass