Here is the picture of the XTrons antenna adapter.
I also forgot to mention that the Audio gate way (MB Amp) is located behind the aluminum cage in the trunk. If your hands are not too big, you can reach the antenna socket and unplug it without removing the cage.
DVB-T box working
7. Remove the knee bolster on the left side. Since my car is right steering wheel, this is under the glove box. It’s held by 2 bolts. Disconnect the lamp cable first, then gently remove the knee bolster out. I tie the DVB-T box at the knee bolster plate because it is very easy to access and close to the door sill.
I forgot to take the picture so this image is from the Pelican Parts - Porsche, BMW, MINI, Mercedes, Audi, Volkswagen, Saab, Volvo - Auto Parts and Accessories
There are 2 soldering jobs here.
7.1 power cable 12 V
- you will see the wire with B+ label or 12 V label solder it with the power cable from the trunk
7.2 ACC wire
- this will be connected to the extra wire from cigarette lighter
Connect all the cables (12 V, ACC and ground). The ACC cable can leave it unconnected at this stage. It will be connected later. Connect the antenna wires and remote control wire. Feed the antenna cable and remote control cable through the opening at the rim of the dash board panel (you need to pry the plastic cover out so you can feed the cables through). The AV out cable, USB cable run them along the edge of the knee bolster tuck and tie with cable tie. Leave end of AV out, ACC wire unconnected.
My DVB-t box come with 2 antennas. I place one near the lower right corner front windshield and the other one near the upper left corner rear windshield. You need to find the right position for them by moving around. This is up to your location. For the rear windshield I just tuck the cable along the roof line rubber door seal.
Head unit working
8. Remove the cd changer, cigarette lighter box and old head unit out. Be careful, do not bend or crack the MOST cable (those orange fiber optic cables).
9. Look at the cigarette lighter cable, we need to do 2 solder jobs here.
9.1 ACC cable
– check RED+White wire from the cigarette lighter.
Solder it with extra wire. The ACC wire will be connected to the ACC cable of the head unit ISO harness, Rear monitor ACC wire and the DVB-T box ACC cable.
9.2 Illumination cable
- check Blue+White wire from the cigarette lighter.
Solder it with extra wire. Look for the ILL label cable from the head unit ISO harness and solder them together. This will give you the illumination of head unit button when you turn on/off the car head lamp switch.
10. Park ctrl wire
– To make the DVB-T box play while the car is running, the park ctrl wire (usually pink) need to be grounded. Solder it with the head unit ground wire.
11. Can-RX and Can-TX wires
- To make the steering wheel buttons work, you need to solder the extra cable from the Canbus-bridge box that I told you before with the wire that connect to the CANBUS-box from the head unit. You have to splice the 2 green wire (green and green+black) from CANBUS - box and solder them to those extra wires. I can’t remember which one to which but you can try to switch to each other one other time. It won’t make any damage to your car, only the buttons won’t work. Once you pair them correctly you will have steering wheel button control.
This image was taken before I remove the MOST socket. Sorry,I can't find the image of the soldering but these wire are what I'm talking to.
12. Connect all optional wires
12.1 ISO harness
(there are 3 set. Choose one that fit with your car existing cable. For me I Choose the longest one since my car comes with the audio gate way. What you have to do is take the existing socket, pry the MOST socket up and pull it out. There is a power cable female socket in the ISO harness Plug the male from existing cable into it and leave the MOST away. We will deal with it later.
From left to right are 3 ISO harnesses and FOB01 connected to AV out.
My car use this one.
The existing socket from old head unit. I remove MOST socket out.
Connect the old existing socket to the female socket from ISO-harness.
(the MOST DECODER) this one is the option for the car that comes with audio gate way (MB amp). It doesn’t come with the head unit wiring. You need to buy it separately. Put the MOST socket from existing cable into the female socket at FOB01. There are 2 wires with this unit that need solder jobs. And 2 connection for the RCA cables.
a) B+ wire- needed to be soldered to 12+ power from the trunk-it needs constant power
b) Ground wire – you can solder it to the head unit ground wire.
c) For the RCA cables- connect the audio front out from the AV out harness to audio in of the FOB01. Someone might use rear out. I think it might be the factory faulty but try the front out first, If it works then you‘ve got it.
12.3 AV video out
1 and 2 to rear monitors ( 2 yellow RCA jacks)
12.4 IPod connector
- I don’t have it.
12.5 GPS antenna
- just screw the connector to the head unit and place the receiver near the left A-Pillar.
12.6 AV in connector
to connect with DVB-T box
-to use the hand free phone connection. I put it near the rear view mirror and feed the cable along right A-pillar to under the right knee bolster.
12.8 DAB receiver antenna
- I don’t have it. But from the information. You have to connect it thru the USB connector. It will come with an antenna that look like GPS antenna (XTrons brand).
12.9 Rear camera AV in
- connect the yellow RCA to CD AVin label RCA (yellow RCA from the ISO harness).
- Solder the Orange+black wire (with back car label) with the power cable from the rear camera (red and black). This will give you the automatically power up the rear camera when you put the shifter in reverse position.
12.10 DVR camera
- IF you want to, it will use memory space in the head unit to store the video file. I don’t know this will work with other brand DVR or not but it should because I need only AV in signal. I didn’t connect my DVR with it.
12.11 3Gwifi dongle
12.12 USB in
- Just plug the connector to the head unit. I run the cable to the glove box.
After all the connections and soldering jobs are made then put the head unit back in place. You might have to tuck in the FOB01 and CANBUS box in the nooks here and there before trying to slide the head unit back because there will be lots of wiring harness at the back. Don’t worry they will fit in with little push and pull.
Try it on your way but be careful with the MOST cable (Orange fiber optic cables). Don’t bend or crack them. You should get the sound right away once the power is on. Don’t forget to put the fuse in the fuse box before start turn the system on. In my case, there was a clip at the 6 disc cd changer that hold the other MOST socket there. It loosened so the signal was not looped (the circuit is broken). It made me so panic since there was no sound. I put a computer speaker to the AV out for checking. There was a faint noise so light came out. I thought it wasn’t going work until I found out the loosen clip. So, if you connect everything and no sound you could try to check at the AV out. If there is a faint sound, then try to check at both MOST connector. You might bend it or loosen it accidentally. Relocate it then you should good to go.
*** You should check the sound and all connections before you put the head unit back in the position. All the connection should be taped to prevent loosen connectors***
Once everything is working perfectly put all the thing back in place by order then you should be able to enjoy your new head unit.
For the rear monitor installation. You need to remove the center console first the laying on the wiring to hide them inside the console. You can find the how to remove center console from the internet then check the wiring you have with you monitors to find the way to hide them.
I have tried most of the free apps for mirroring, GPS and OBD reader but they are not quite ok. The ones I have with the head unit are the purchased version or the full version. I hope that my article might give you some help for the installation. Good luck and enjoy with your new head unit.