OEM Navigation Hood Retrofit for Carputer Application
 

Goal: To install the OEM Navigation hood into a car that did not come with the Nav option, and maintain the motorized “Open” and “Tilt” flip-up functions.

Background: A lot of us are beginning to get into carputer builds for our cars. Most of us want to maintain that OEM look and feel and decided one of the better options is to house our carputer screen in the OEM navigation hood. For owners whose car came with the factory nav option, it’s almost as simple as replacing the stock LCD display with a higher resolution, touch screen display, with no issues retaining the Open/Tilt function. However, for those cars that did not come with the nav option, it becomes a little tougher. Up until this point, people either leave buttons non-functional and manually flip up the screens, one person managed to build a circuit board to control the functions (see following link), or give up all together.

https://www.rx8club.com/series-i-interior-audio-electronics-24/hooking-up-used-nav-screen-buttons-87146/

So my first disclaimer is that I’m not a car electronic guru. I’m hoping that between all the engineers, and experts on this forum, we can find a solution to probably a simple problem. Maybe as simple as tap here for POWER, here for ACC, and here for GROUND.

Here is a picture of the on-board PCB, which is located on the back of the OEM nav LCD. I believe these PCBs control the motor that opens/tilt the hood, as well as feeding the video signals to the LCD:
https://www.rx8club.com/attachment.p...4&d=1144689476

Nav wire harness (24 pin – 2 rows; 6 pin – 1 row):
https://www.rx8club.com/attachment.p...5&d=1144689476

Here are the diagrams from the electrical manual:
https://www.rx8club.com/attachment.p...1&d=1205509772

https://www.rx8club.com/attachment.p...1&d=1205509772

To the electrical engineers, can you point out on the 24 pin harness, which pin is for POWER, ACC, and GROUND? Is it as simple as feeding the PCB power?

holy crap thank you for posting these! i am actually getting ready to start my install here soon as soon as g3treddy ships me my hood :) i realize it was posted before however i hadn't come across these yet, i too am interested in the answer

You may want to PM MSTYLES he's retrofitted the OEM Nav hood but hasn't been on in a few months :(

P.S

His eight is absolutely outrageous

i might have to send him a pm or two myself :)

I have myself. ;) fingers crossed!

let me know what you come up with i will be following in your footsteps :) also if you want to take pictures on where you hooked up to power and everything you would be forever leet in my mind :)

LOL - I was hoping you'd resolve it first!

can't be the first havn't gotten my hood yet! :) you get it figgured out yet? i am thinking it is going to be a nightmare to get this thing all hooked up and working

Not yet. Just got my Carnetix P2140 and I've been playing with that. What's taking your hood so long?

my own excitement i believe i thought it was sent two weeks ago it was sent last friday. stupid anxiety ;) so excited to get this thing going only to run into a brick wall w/ the hood lol. i also need to get my hd radio cable in. sinec he just got stock a few days ago i'm going to be a bit frustrated if i get it before the hood :D usps better not be slow. i wanted to get a full weekend of attempts in w/ the hood this weekend, unless it shows up tomorrowit doesn't look like that will happen.

got my hood friday been dicking around with it all weekend so far... havn't messed w/ electrical yet however it looks like it is going to suck. i have been dremeling out the hood to fit the screen atm it is quite a mess lets hope it works out alright

hey i found this https://www.rx8club.com/series-i-interior-audio-electronics-24/rotorgeek-carputer-rearview-cam-78367/page4/ do you know if this is the right one?

I don't know how this rail diagram correlates to the 12x2 pin harness.

https://www.rx8club.com/attachment.p...id=62351&stc=1

i was thinking 12x2 = 24 + the other 6 cable but who knows

Makes perfect sense! Shows you how much I can read an electrical diagram!

Now where does the 24 end and 6 begin? Or vise versa?

by the wires i was thinking 25-30 would be the 6 separate wires however don't quote me on that i was asking if anybody knew if it was the correct diagram

I ran into this same problem when I had my hood and just gave up on it. It became too much of a headache to get everything figured out and the hood and screen was just sitting around waiting to be installed and I was getting frustrated..so I sold both and got the MS front bumper instead! :)

Best of luck to you guys! Its a total bitch!!

got pretty much everything installed atm and i am just going to make a circuit to drive the motor as mote is correct there is about no way to figgure this out in a decent amount of time

I've tested every pin with a multimeter, and with my very limited knowledge and after some sparks flying, doesn't look like I can find and isolate the correct signal to power the unit and control the hood.

I am in the process of building the circuit from rprzybyl in this thread . I'm at a point where I need to figure out which pin on the relay hooks up to the wires coming out of the servo/motor.

Pics of the carputer:
http://i32.photobucket.com/albums/d2...r/c7e9988e.jpg

Nav hood and Xenarc monitor that will be replacing the OEM screen in the hood:
http://i32.photobucket.com/albums/d2...ter/img022.jpg

Xenarc monitor with StreetDeck running:
http://i32.photobucket.com/albums/d2...ter/img020.jpg

Hey RA 8, did you buy the motorized housing separately?

I'm considering doing the whole car PC thing as well......

i also did the same ra can you post the pix of your circuit both top and bottom when you finish? i have had problems w/ my relay. aka power goes in switch works no power comes out doesn't matter if it is switched or not. even wired according to the back of the box as best i can tell :) i didn't find one that is the exact same as the wireing doc though and got one from radio shack w/ the same power numbers

Well, I just found a used motorized nav housing. Should have it next week. Hopefully we can come up with a solution......

is it really so hard to get the motor powered so you can open and close it? i would have thought it'd be easy as that.. get rid of the pcb and feed the motor current directly.. bahhh!