Hey all, first post here, I have been in the automotive industry my whole life with the majority of it in aftermarket and custom installation, I also specialize in understanding automotive electronics and communication with a background in
1. Not letting the magic smoke out of the wires, lol, old timers here will understand that.
2. I have a heavy background in mass fleet integration of mixed telematics, audio/video and OEM vehicle integration with emphasis on bidirectional communication, J1708 J1939 J1850 OBD-2 K/CAN and manufacture specific comms.
3. Solution based environmental and use installations with emphasis on expedited mass installations for speed, accuracy and least invasive (return to OEM) every OS and platform android, apple, Raspberry, QualComm, OEM and After market manufacturers and custom interfaces. (This means ive cursed at A LOT of engineers over the phone)

ok, SOOOO… maybe I am stupid or the google AI or whatever is now completely useless but thanks to Club Lexus, why I am posting this here, I was able to find all of the vehicle wiring schematics I needed!!! SO GIANT THANK YOU to whoever posted the full 2006 Lexus RX400h drawings, you are a rock start!

I have a 2006 Lexus RX 400H, Mark Levinson high level navi and AC no rear seat entertainment, I bought a ANDROID VERTICAL TESLA STYLE IPX6 XTRUCK ZHIFANG ZF-1278G or whatever 11.8” touch screen unit that said (worst communication about questions EVER!!!) it supported my car, Ive dealt with the after market integration of these systems since new. I was skeptical at best based on reviews and poking around it would do what the flyer says.

Happy to report it will, the instructions are absolutely GARBAGE!! They send you a back up camera for the 2005/2006 models as they say it cant be integrated although the flyer alludes to it working.

Well it can be done, its easy, maybe easy-ish for those less inclined, all the same have no fear it can be done.

few things you need to know,
1 the video signal to the multi display unit (your navi screen) is a component video signal (red, green, blue) not the composite (single yellow RCA) that you are use to.
2 the camera is a composite video signal compatible with EVERY normal after market screen
3 communication is extremely important for all things to work, every audio or Avc, bean or gateway communication needs to be connected
4 almost everything they give you is WRONG just throw the instructions away almost.

*RGB to composite would be the easiest and cleanest, it would give access to hybrid screen if you want to dig farther in
*IT does work with the mark Levinson amplifier, you need to make changes in two places, system and AC or Interior its an icon for more car settings.
*A/C installation password 8861

Quick and dirty for ya, apologies if this info is here somewhere else, I couldn't find it.
I could write a better one if needed, if anyone knows the other passwords lemme know,
thing works pretty good, gotta turn brightness to MAX (top left corner of screen) maybe I can find a light rejection screen protector for it? It sucks how much natural light hits it.


1st thing is swap these pins in the teslas style harness you got, its a 26pin connector at the multi display unit NAVI screen.

The after market harness comes with this 28 pin connector that is split to the 26 pin connector it has another smaller black plug that connects to one of the secondary ports on the aftermarket unit, this is your TX+ and TX- green/black goes to blue green goes to pink. its important that they are connected at each connector, they basically go in one unit and out to the other, they also communicate Reverse to the NAV ecu and Television ecu.

This how it should look, you’ll have to move the composite pins as well if you follow my instructions and don’t go with a component to composite converter. Yellow to red Black to white If you use an RGB converter you can split the video signal from this to the second composite video source, youll have the factory navi screen, which means if you want to be savvy you could figure out how to have access to the factory hybrid screen! I dont care, so not doing it, i could probably be bribed to do it

RED WHITE BLUE PINS here with brown and yellow on the sides, 28 pin connector. This is your component video signal, if you get a 12v component to composite video converter, this will be your last step. Red is red White is green Blue is blue Your center + for each will got the corresponding color, all of the shields (outer -) will go to black/white wire. I would maybe steal the unused RCAs from the harness that comes with your radio and swap them into this and just combine all shields to one pin

Television ECU right side rear (passenger rear on RHD) from the left, 1st plug here has the camera composite video input signal.

Red and Gray are your camera signals, cut these, make your connections to the harness side of these wires, NOT THE PLUG put the p[lug back in.

Second plug, cut red and white on this side, this the rgb signal to the multi display unit. White goes to the gray you cut from the other plug AGAIN this is at the harness and not the plug. Red goes to red Grey goes to white The TV ECU, NAVI ECU all still function as they should, the TV ECU triggers in reverse and sends the 6v power to the camera.

This plug is your TX+ and TX- comm wires.

Factory cam!! Access to factory hybrid display if inclined

 

Amazing, thank you for the write up! I'm about to embark on installing my own during the holidays. Just to be sure, there was no step down voltage converter required?

 

NOPE, you don’t need anything, honestly the fastest and easiest way is to get a DC12v component to composite converter. Then just grab the RGB wires I pointed out and put RCA ends on them, plug that into your converter and plug the navi backup RCA into the output of the converter. Done.

The navi ECU in the back powers the backup camera and also triggers the video switch, its still going to power the camera. You are just using the composite output from the camera, instead of it going into the navi/tv unit in the back you are cutting it and using existing wire to send that signal to the front so you don't have to run any wire. It all stays pretty much factory. It can be undone completely in no time at all.
if you use the component convert and took apart the command buttons from the original bezel, you could get and use all of the factory info. So the trip and hybrid drive can all be displayed on screen.
typically you could just use the Green signal from the RGB set and get a good enough composite signal. Its not the case with the Lexus though.
i don’t care enough now to do it, my ex got that car so… 😂
if you follow my instructions though it’ll work perfectly and you'll be happy.
good luck!

 

Cheers mate! Looking to start work on this in the next couple of days. Taking on board about the advice on the component to composite converter, the closest thing I can find that I can pick up is made to suit a VW, Some googling of the compatible VW head units and their wiring diagrams lead me to the questions and pics below.

I am an absolute novice when it comes to things like this so really appreciate your advice (thanks in advance)! A million questions incoming..

1. Are you familiar with such a unit? Could this work on the 2nd gen RX? Recommend any alternatives?
2. Is installation simply a matter of attaching the RGB wires from the RX into the corresponding RBG wires in the harness, and the power (+), ground (-) and reversing signal wires?
3. Would I be able to have this function while capping the other two wires on the harness? green 'sync' and black input?
4. Should power and ground come from TX+ and TX- green/black / green wires? Tap or connect directly?
5. I shouldn't need to connect the reversing signal wire right? Because the goal is to only convert video signal?


Labelled component to composite converter for VW RNS510 head unit


[img alt="Pin layout - 26 pin plug and
pin 13 - IN green (red wire)
pin 12 - IN sync (green wire)
pin 11 - IN ?? (thick black wire)
pin 26 - IN red (white wire)
pin 25 - IN blue (thin black wire)
"]https://cimg8.ibsrv.net/gimg/www.clublexus.com-vbulletin/466x575/vw_rns510_pin_layout_diagram_3199bfb5742620cf271d59dd858c2d65cf1b830e.png[/img]
Pin layout - 26 pin plug and pin 13 - IN green (red wire) pin 12 - IN sync (green wire) pin 11 - IN ?? (thick black wire) pin 26 - IN red (white wire) pin 25 - IN blue (thin black wire)





PS. unfortunate about the ex, **** how these things tend to happen to coincide with other important periods of time ie. holidays

 

Got scared of cutting wires and seeing as I was going to have everything opened up due to planning for a 2ch dash cam (includes rear) installation, I ended up installing the supplied camera. I am pleasantly surprised that the picture quality is way better than the OEM camera.

Fabbed a custom mounting plate and documented the details in the post below
https://www.clublexus.com/forums/rx-...l#post11841522