Nav Screen Pinouts - The Unofficial BMW M5 Messageboard (m5board.com)

rad22 · 5th November 2002, 08:58

Does anyone have the pinouts for the 2 connectors on the back of the in-dash nav system head unit for the Mk III (female voice) system?

I've already done the surgery necessary as described here, http://www.bmwtips.com/, to use the tape system inputs to provide aux input for my iPod mp3 player, and as suggested, a preamp is required. I just received via internet mailorder, the AudioControl® amp featured in the article. It needs three connections (1. +12V 2. Gnd and 3. Remote on) and I am searching for sources for these in the connectors of the nav screen head unit. I'm open to other knowledge as well for alternative sources for this unit's needs (#1 and #3).

BTW, I HIGHLY recommend this hack. Although without the amp, the iPod and BMW volume must be set to near-max, the sound quality obtainable is absolutely unbelievable. Can't wait to get the amp up and running. With my 20 gig iPod, I have currently over 3000 songs online to hear in the car at 128-192 kbps sampling rates.

sysvr4 · 5th November 2002, 15:24

Ground and power should be very easy to fine. Power is usually green and ground is usually brown or brown with black stripe. You can verify this by:

1) Strip each end of a very small gauge (18-22) solid core wire approx. one foot in length

2) Put one end into the hole in the connector corresponding to a green wire (or any wire you want to test for power)

3) Take a volt meter and touch the other end of that wire to a lead from the volt meter. Touch the other VM lead to a ground point. You'll have to find a known ground wire, or make your own. If you just touch to metal on the car it prolly won't work unless you strip the paint off.

4) Once you find power, ground is easy. Move your wire to a hole for a brown or some wire you think may be a ground. Set volt meter to continuity test. Touch one lead to your wire and the other to your known ground. If you have continuity, you found your ground. If not, try another wire.

As for remote, I'm not sure about it in the front of the car. But I know that in the back of the car it's the white wire. You can test for it the same way you test for power above, but you'll have to have at least the accessories on.

Let us know what you find, I may end up having to do this too since Vision totally screwed up my RCA install on my tuner.

Jeff