You could try this parking bypass off amazon but I think you may still have the interaction limit.
I never tried to play music with an SD card. I do have a bypass installed. I know with the 4200 there is a different bypass module that you need. Did you make sure you got the right one?
Edit. This is the one I have MicroBypass Parking Brake Switch Fully Automatic Video in Motion Interface for Pioneer AVH-4100NEX AVH-4200NEX https://www.amazon.com/dp/B00VKQ6ECQ/ref=cm_sw_r_cp_apa_6IlgAbHPR7ZVZ
Edit : nevermind didn't see that you already linked it lol
Which cables have you tried? Did you use any on the list on the pioneer website? Have you tried enabling USB debugging like some forums say?
Grounding was a common workaround for head units with nav systems that required the car to be in park to enter an address or generally be useful. The manufacturers caught on to people just permanently grounding the parking brake wire to trick the head unit so they got a little smarter by checking to see if the parking brake toggles when the car is started.
There are specialized parking brake bypasses that simulate the parking brake toggle, here's one listed for the 4100-NEX. If OP tried grounding or the wire isn't hooked up in the first place this might be the ticket.
Yes. It's android autos google maps based off your phone. They make google maps and spotify driver safe. But still both work fine for the basics. I come from the same background as you and I love this device. Play around with the MHL stuff too. And absolutely 100% get this
2 steps:
1. before turning ignition, I check voltage (+) and Remote wire. Verified 12V
2. After turning ignition, checked (+) and Remote, and the voltage is 0.
I have a parking brake bypass installed that connects to blue-white (Remote), Ground (black) and Left Rear Speaker (Green).
I am suspicious that the bypass is grounding the remote signal causing the woofer to not turn on.
Will remove the bypass and try again.
For nice bare metal, should I just sand the paint off in a small area and ground it to the metal with a self-tapping screw? Will watch some videos to get that done correctly.
I got all my harnesses from David at ae64.com. I emailed him with the details of what I was planning to do and he responded with everything I needed. It was nice to get them all from one place.
I paired his harnesses with a Maestro RR to retain the backup cam and steering wheel controls.
Remember, if you email David, he will give you a list customized to your application, but here is what I used:
Ordered from ae64.com
Ordered from Amazon:
Ordered from eBay:
Hope this helps
I had the same problem with a pioneer unit and the toyota harness - the ebrake signal isn't compatible. I ended up getting a $10 override chip from amazon ( https://www.amazon.com/gp/product/B00VKQ6ECQ/) and putting that inline.
You can, in theory, hack something up with a relay or by running it to other signals under the dash (check the manuals and google). I didn't feel like pulling my dash apart more so I was happy to shim it out with the chip.
May not be compatible with your unit so do some research
MicroBypass Parking Brake Switch Fully Automatic Video in Motion Interface for Pioneer Model AVH-4100NEX https://www.amazon.com/dp/B00VKQ6ECQ/ref=cm_sw_r_other_apa_lvQCxbNCTX540