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I got lucky, found an MKIII for $30. I have a 98' E38, but I am wondering how to upgrade? What adapter do I need? I checked E39Source but the information is vague on what needs to be installed. Am I removing the old harness or is it a plug and play adapter? Not sure how to proceed. So 61 12 6 907 840 is all I need? Curious if the DSP amp will work as well. CD changer may need to be upgraded?
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Last edited by Southern740iL; 12-16-2018 at 05:06 PM.
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This "may" help you a bit:
http://www.bimmerboard.com/forums/posts/72969
<== Steptronic Sealbeach740
2000 740i sport: 74k Green/Tan chrome MPars, clear corners, quad brake lights, AIC hi-beams, Hoen fogs, 16x9 screen, MKIV, TFT LCD screen in back, license plate backup camera with "on demand" switch, iPod audio/video (CDC/iPod audio switching, iPod video on 16x9 screen), Basslink, gauge rings, ///M pedals, switched steptronic +/- shifting mode, E46 paddle shifter steering wheel, Dinan engine & tranny software upgrade, DDEs controlled via Euro fog light switch, painted calipers with "BMW" lettering, windows up/sunroof close via remote.
2003 540i sport: 81k, Sterling grey/grey, MKIV Nav, PDC & CWP - Added license plate backup camera with "on demand" switch, paddle shift steering wheel, windows up/sunroof close via remote, Akebono's, painted calipers with "BMW" lettering, quad brake lights, iPod audio via AUX mode/video via 16x9 screen, BMW TV tuner, ///M pedals & gauge rings.
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I found a 01' iL parts car at a yard. I got the part number for that harness needed for upgrading the MKI to MKIII which is 61-12-6-907-840, so, I called the dealer, gave them the VIN to the parts car and stated that this part is on the car. I looked in the trunk, can't really find it. I took some pics along with the actual harness. So, obviously I found the harness that plugged into the MKIII navi for the parts car. But the rest of those, I can't find and the harness goes up towards the rear deck and so on. But from what i can tell, that harness does not run the length of the vehicle to the front. What am I missing?
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[Update]
So, no matter what the dealer said, it seems like that adapter is made specifically by BMW and is not pre-installed on E38s, no matter the build date.
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