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Hi all,

I've been asking a lot on this forum and did little or no contribution. Hence, my first DIY.

Note: This will at best, achieve the audio standard of a FM modulator. This mode is for OEM 6 disc in-dash changer only. Slight modifications to the DIY is required for other OEM head units.

I did this to a Thai produced, 2002 Civic Ex 4Dr.

Pardon for the absence of photos as i'm working on 56k in my village. But feel free to ask any questions.

Non-tool items used:

1. Normal Wire
2. 3.5mm Earphone Jack
3. Soldering Iron and Soldering essentials

DISCONNECT BATTERY BEFORE STARTING ANY WORK!!

Step 1. Remove Stock Head Unit

I followed the guides posted by Gearbox, Riceboy and others(Thank you!!). However, i had to remove the entire center console in order to remove the cigarette lighter piece.

Basically what i did was:

• remove the center console which means 4 screws and multiple clips,
• remove one screw in my "next to cigarette lighter" ash-tray,
• remove the cigarette lighter piece by pulling it towards me,
• detach the wire harness to ashtray light and cigarette lighter,
• look up into the vacated hole and remove 2 size 8 bolts,
• reach my fingers in and push up and towards me to remove the entire center dash consisting of a/c vent covers, hazard light switch, head unit, and climate control, i had to use considerable force but no prying involved,
• unplug all wire harness attached,
• undo 8 bolts to free head unit from bracket and 4 screws to remove bracket. My head unit wouldn't come free unless i remove the bracket.

Step 2. Remove bottom cover of Head Unit

Now that you have the Head unit in your hands, remove the metal cover on the bottom of the head unit. If you removed the cover and sees the cd changer, it's the wrong cover. When the correct side is removed, you should see the Printed-Circuit-Board(PCB).

Look on the left side of the PCB, there will be a row of pins, 30 to be exact. They are numbered in series of 5s.

Solder your wires to Pin #1 and Pin #9, Pin #9 should be ground. Simply reverse the polarities if i'm mistaken.

After soldering, replace the cover back on. There are many holes on the metal cover, thread the wires through hole nearest to Pin #9.

Step 3. Reassemble Center Dash

In reverse order, reassemble the Head Unit taking caution and care of the wires when sliding the Head Unit back into the center dash and bracket. Reinstall the center dash piece and run the wires under and out from the hole meant for the cigarette lighter piece.

I eventually installed my wire coming out just above my cup holder on my center console. No drilling as the natural gap between the center console and cigarette lighter piece will suffice.

Step 4. Connecting 3.5mm Wire Jack

Finally, solder on the wires to the 3.5mm Jack. Double check that you have nothing left out on reassembly, run the climate control diagnostic and you're ready to connect the car battery!!

Remember to idle and let your ECU have a chance to learn.

Playing from devices

Turn on your head unit, tune your radio to an unused frequency. Highest channel number on AM works for me. Your device should be playing through your speakers.


End Note

Do not expect outstanding sound quality but if you live in a place like mine where dealers suck, aftermarket parts are not up to your expectations and internet orders do not ship your way, this is great considering you're running STOCK head unit and speakers.

**I will not and cannot be held liable for any damages to your property. This DIY works great for my ride, but untested on others. Use at your own risk!**

Future plans for this DIY involves a switch for my radio antenna to maximize sound quality. Or if anyone can furnish me with the PCB number or correctly identify the pins for cassette tape input, i'll re-solder my wires to the correct pins and get a blank cassette. Antenna kill switch will minimize radio signal disturbance while cassette options remove the signal problem entirely while compensating with slight music stoppage when the cassette loops.


Thank you for reading! Hope this will help you get Aux input without too much problems.


Brgds,
Sinblesser