I just bought a Hualingan 4th gen for my X5 E53 2005 with 40 pin connectors (no DSP). Obviously I had to stretch a 6 meter cable harness from the trunk to the HU.
Before I installed it i read a couple of the guides in this forum. Directly upon installation, still being in the garage, it seemed like I had been successful. There was sound from from the various sources (Radio,DVD, iPod, iPhone via bluetooth, SD, USB), I could play video from DVD and the iGo8 GPS system functioned.
Then the problems started. Sound from from all sources comes and goes. Mostly goes. The user interface freezes and hangs. No more video or pictures, and the bluetooth Iphone connection does not work.
All the connections have been checked and rechecked to the best of my skills.
Conclusion: I have found that when the engine is off and I operate the unit everything works fine, but as soon as I start the engine the system malfunctions, i.e all sound vanishes, I canīt play videos and bluetooth malfunctions etc.
I have to admit that my electrical skills are far less than average. Still it strikes me as strange that it all works while the engine is off, but as soon as I start up everything stops.
The HU was bought from cars-electronics.com in China. Iīve emailed them about the problem and the have asked me to take pictures and video to help assess the situation and the connections.
I have not attempted to connect the "illumination" wire anywhere and as such I do not have illuminated buttons. To be honest I have no idea where to connect it.
In addition I have also not attempted to connect the HU to the reverse camera (original) for the same reason.
I would deeply appreciate it if anyone in here could be of assistance. The whole thing has become really frustrating, and I am seriously considering putting back the original HU and keep burning CDs.
Check out video on filecloud.io here:
download - filecloud.io
or youtube:
Hualingan installation problems - YouTube