Sport seats retrofit- wiring question

ritzzzzzwik · 02-04-2017, 10:12 PM

Hello,

i am in the process of retrofitting BMW sport seats in my 07 335i. The donor seats are from an 09 328i. My 07 seats have everything but bolsters, the 09 seats have bolsters. as i understand I need to make a connection from pin 9 to pin 7 on the harness to get the bolsters working?

also what is this?

dragerboy · 02-05-2017, 09:19 AM

On Lci seats there was a headrest restraint system which I think is what that connector is. I fitted LCI Msports to my Pre Lci but bolsters do not work, interested to know what I need to do to.

ptpending · 02-05-2017, 01:02 PM

bolsters require power and ground circuits

ritzzzzzwik · 02-05-2017, 01:03 PM

Quote:

Originally Posted by dragerboy

On Lci seats there was a headrest restraint system which I think is what that connector is. I fitted LCI Msports to my Pre Lci but bolsters do not work, interested to know what I need to do to.

What year is your car and what year are your new seats? Most importantly are they pre 3/07 or post 3/07?

ritzzzzzwik · 02-05-2017, 01:08 PM

Quote:

Originally Posted by ptpending

bolsters require power and ground circuits

connection from pin 9 to pin 7 on the harness still accurate? based on pin diagram pin 7 on the new 09 seats are power for bolsters and lumbar. Ground matches up to pin 13, which is already in place.

ptpending · 02-05-2017, 01:47 PM

it is better to check in real
power wire usually red with something color
ground wire usually is brown

dragerboy · 02-06-2017, 02:47 AM

Quote:

Originally Posted by ritzzzzzwik

What year is your car and what year are your new seats? Most importantly are they pre 3/07 or post 3/07?

Mine is 06/2006 E90 and I fitted full interior from a 2011 car.

Roon2k · 02-06-2017, 06:49 AM

I dropped in a 2008 interior into my 2011. The connector you're asking about is for the head restraint system. Just leave it disconnected but cover it up with some electrical tape.

There was an excellent guide on here with the pinouts. The driver seat and passenger seat are different so make sure to check your work and compare it with the guides.

http://www.e90post.com/forums/showth...=480313&page=2

Its a lot of reading but most of the info is in there

02-04-2017, 10:12 PM	#1
ritzzzzzwik Captain 232 Rep 723 Posts Drives: SO M4 MT Join Date: Oct 2014 Location: NOVA iTrader: (0)	Sport seats retrofit- wiring question Hello, i am in the process of retrofitting BMW sport seats in my 07 335i. The donor seats are from an 09 328i. My 07 seats have everything but bolsters, the 09 seats have bolsters. as i understand I need to make a connection from pin 9 to pin 7 on the harness to get the bolsters working? also what is this? Attached Images __________________ 2007 335i E92 MT \| MFactory LSD \| Diff Brace \| MHD/Wedge Tuned\| BL Coils \| Stg2 lpfp BoostConcepts \| VRSF DPs \| VRSF 7" HD FMIC \| DCI \| VRSF CP \| BMW SSK \| Billstein PSS Coilovers \| M3 Control Arms \| Whiteline Rear SF Inserts \| SS brake lines \| Z4 35is Rotors \| Hawk 5.0 pads \| M219s + PSS \| PE Mod -SOLD 2016 M4 F82 MT
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02-05-2017, 09:19 AM	#2
dragerboy Captain 83 Rep 687 Posts Drives: BMW E90 330D Join Date: Apr 2016 Location: Horsham, UK iTrader: (0)	On Lci seats there was a headrest restraint system which I think is what that connector is. I fitted LCI Msports to my Pre Lci but bolsters do not work, interested to know what I need to do to.
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02-05-2017, 01:02 PM	#3
ptpending Colonel 456 Rep 2,749 Posts Drives: e91 Join Date: Dec 2013 Location: Poland iTrader: (1)	bolsters require power and ground circuits __________________ E81 2007 130i 6cylinder Montego blue Retrofits: Harman Kardon, High-beam assistant, Removable tow hitch. Auto-dim folding exterior mirrors. Lumbar support. Perfomance Brakes.
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02-05-2017, 01:47 PM	#6
ptpending Colonel 456 Rep 2,749 Posts Drives: e91 Join Date: Dec 2013 Location: Poland iTrader: (1)	it is better to check in real power wire usually red with something color ground wire usually is brown __________________ E81 2007 130i 6cylinder Montego blue Retrofits: Harman Kardon, High-beam assistant, Removable tow hitch. Auto-dim folding exterior mirrors. Lumbar support. Perfomance Brakes.
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02-06-2017, 06:49 AM	#8
Roon2k Enlisted Member 2 Rep 43 Posts Drives: 2011 328i Join Date: Jan 2017 Location: Nepean iTrader: (0)	I dropped in a 2008 interior into my 2011. The connector you're asking about is for the head restraint system. Just leave it disconnected but cover it up with some electrical tape. There was an excellent guide on here with the pinouts. The driver seat and passenger seat are different so make sure to check your work and compare it with the guides. http://www.e90post.com/forums/showth...=480313&page=2 Its a lot of reading but most of the info is in there
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