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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > DIY Powered seat retrofit (WIP)



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woodpecka's Avatar
woodpecka
01-24-2011
This topic was a WIP research about how to do the electric seats retrofit. We discovered there are so many car configurations that it's impossible to do 1 guide for all. So, we prefer to share our notes and you must do your own research to validate your car and seats FROM -> TO configs.
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  #264  
By phozenstone on 08-20-2014, 06:09 AM
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Both seas in my case needed separate wiring and kcan for both to continuously retain movement. Without kcan it just moves for a minute and stops
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  #265  
By instigat0r on 08-20-2014, 11:06 AM
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I double checked my wiring and found that my connections were loose and nwere making contact. After I fixed my connections, both seats work perfectly!!!

I would like to suggest that instead of using 12 guage solid wire, use 12 guage braided wire. Its much, much easier to use than solid wire and is just as good/safe.

Also, those wire tap connections were garbage! When I redid my wiring, I inspected the wire taps and found on 3 different occasions that they missed the wires. I spliced into my power and ground wires and bridged them over to the correct pins (4 and 9) by soldering. Heck, you could event do wire nuts and still be fine and better off than using those wire taps.

And both of my seats (driver and PASSENGER) required the Kcan wires to be connected for theM to work.
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  #266  
By Emeye on 08-21-2014, 05:16 PM
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Fantastic thread - thanks to all those that have contributed.

I have read the full thread and also had a bloody good google, and I think I have worked out how to get the lumbar and side bolsters working, but I am still not sure whether the M-Sport seats I have fitted to replace my SE leather (UK car) are heated or not!

Can anyone tell by looking at these photos whether these seats are heated please? I have a large module under each seat.

Drivers side first.
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  #267  
By Emeye on 08-23-2014, 06:08 PM
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Any one?
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  #268  
By Emeye on 08-24-2014, 04:11 PM
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Well, I still have no idea whether my new seats are heated or not, but most importantly I managed to get my lumbar and bolsters working.
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