The install on the non DSP cars seems to be plug and play. Below I put together a step-by-step DIY done on e53 with DSP and 17 connector. DIY for the DSP equipped cars using the first generation Hualingan unit.
This is the unit.
I have had the unit fitted professionally however they could not fit the camera into the number plate light as the camera is to big (too deep). I did see a photo of a smaller one when i went on the internet previously but
forgotten sight. I have emailed the supplier and advised them that it is to
big and possibly the wrong one. they replied and said correct camera for
E39 but mine is E53. the camera may just fit with cutting etc. can anyone tell me how they fitted the camera into the left number plate light.
also sat nav is not working correctly - doesn't give audio directions just
shows map of street where you are going but no navigation instructions, and says looking for GPS signal.
This is what you get in the box:
1. remove the MID and the radio and make the cut on the e53 or remove the frame on e39. Below is the cut I made, you might be able to find a better line but it worked well for me.
2. Connect the Navigation unit with the proper harness (17 or 40pin adapter). Below is my setup using the 17 pin adapter.
If you don't have DSP you don't need to do the following steps.
3. I moved the eom radio in the trunk beside the dsp/amp. Use a second connector (17 or 40) to connect the radio to the power, ground, iBus, power antenna and 12vcc switched.
Use a DB25 male connector. The newer models have a 54 pin connector. Identify the 12v switched and connect it to the radio connector.
4. Extend the MID wires to reach to the glovebox and move it in there. This way you will have the DSP, BC controls available if needed.
5. all done
Note that this way the HL unit will use the steering wheel controls as well as the DSP amp. So the volumes will be in series as you would have in a TV/sat Receiver home setup. If you get the oam amp too low using the steering wheel controls then the if you use the nav system to raise the volume then you will get distortions. So make sure you set the volume for the amp at a high level and control the audio volume using the steering wheel control.
I got a very good sound, I find it much better than the original radio.
I have done it this way because the dsp amp does not turn on by just connecting the HL unit. You have to trick the DSP amp to stay on.
I hope this helps for now. Hualingan is sending me a new harness to try it out.
