///M Cruise Control - Myths & Legends Busted - Retrofit DIY HOW TO!!

Post by **srhutch** » Thu Dec 28, 2017 11:58 pm

MrPT wrote: ↑Thu Dec 28, 2017 11:49 pm Finally fitted mine today. Thanks Steve - the kit really made things easy. A lot easier than fitting my previous non-M with the OEM retrofit kit, I reckon.

Some feedback/questions:

* The install took a couple of hours, from disconnecting the battery to going for a test drive
* What is the length of purple heatshrink around the blue wire for? I threw it away but later ended up using some of my own heatshrink to hold the male/female connectors securely together when bundled with the LCM loom

This is what it was for

* The blue wire came up about 30cm too short to follow the existing loom and loom guides all the way from the DME to the steering rack. It might have reached if I'd routed it directly downwards out of the bottom of the X6021 socket instead of up past the plug and into the main bundle of wires, but access was tight

Should have been fine. I made them all slightly longer than the factory loom and have fitted 3 or 4 to ///M without issue running behind the panel below the ac controls.

* Great tips re. removing the air vent and dropping the LCM loom down into the footwell while installing!
* How did you connect the violet/yellow and black brown wires under the heatshrink? I wasn't sure whether they would bend without breaking inside (as a spade connector might do, for example, but not a soldered joint), so kept them as straight as possible when tying everything up

Yes just kept them straight and together using the heatshrink then cable tied to the existing loom.

MrPT · Post by **MrPT** » Fri Dec 29, 2017 12:15 am

Good good. Some pics:

DME stuff

: IMAG5510.jpg (173 KiB) Viewed 12612 times

LCM stuff

: IMAG5512.jpg (152.87 KiB) Viewed 12612 times

This the where there wasn't enough slack in the blue wire to follow the existing loom all the way to the steering column. I might have used up too much of it following all the twists and turns between the DME and the passenger footwell.

: IMAG5514.jpg (154 KiB) Viewed 12612 times

Post by **srhutch** » Fri Dec 29, 2017 10:14 am

That must be the reason, unless I had brain failure and wrapped the blue cable all the way down.

couchflyer · Post by **couchflyer** » Fri Jun 22, 2018 10:21 pm

I having a hard time finding the loom. The part number is B 61 12 0 411 248, correct?

Post by **srhutch** » Fri Jun 22, 2018 10:44 pm

If you are in the UK I can supply you a custom loom for £20 delivered.

couchflyer · Post by **couchflyer** » Fri Jun 22, 2018 10:48 pm

No, I am in the states, Minnesota actually.

Post by **srhutch** » Fri Jun 22, 2018 11:00 pm

Part number is correct, main dealer is your only option I would think.

couchflyer · Post by **couchflyer** » Mon Jul 09, 2018 4:21 am

Hey srhutch, would you ship a loom to the USA?

Also, if not is this all I need? https://www.ebay.com/itm/BMW-Z4-cruise- ... 1438.l2649

Thanks

couchflyer · Post by **couchflyer** » Tue Jul 31, 2018 3:21 am

The above works great, just got it installed today. Thanks for the posts
& photos.

Mr C · Post by **Mr C** » Thu Aug 16, 2018 11:12 am

Bought the stalk & loom a couple of years ago. I finally finished installing yesterday. Works a treat guys. Thanks for all the inputs & knowledge on this. Now I just have to remember to use it when going through average speed zones !!

GT Spec · Post by **GT Spec** » Tue Jul 21, 2020 6:21 pm

I did the retrofit over the weekend, fairly simple process if you are competent in automotive wiring. For completeness if you want a completely OE installation you will need 1 x 61138373293 (male pin) for the Black/Blue wire connection at X6021 within the ECU casing.

Post by **srhutch** » Tue Jul 21, 2020 7:15 pm

GT Spec wrote: ↑Tue Jul 21, 2020 6:21 pm I did the retrofit over the weekend, fairly simple process if you are competent in automotive wiring. For completeness if you want a completely OE installation you will need 1 x 61138373293 (male pin) for the Black/Blue wire connection at X6021 within the ECU casing.

The wiring I supply for all gives oem connection. If it’s an ///M it doesn’t connected directly to the ecu.

turbitoz · Post by **turbitoz** » Tue Aug 18, 2020 10:57 am

Hello - if anyone is willing to help me fit this for some beer tokens or a reasonable fee please let me know Herts area but happy to travel reasonable distance. would try myself but I don't know these cars myself and I only had the Z4M for one month

BMWZ4MC · Post by **BMWZ4MC** » Tue Aug 18, 2020 11:14 am

turbitoz wrote: ↑Tue Aug 18, 2020 10:57 am Hello - if anyone is willing to help me fit this for some beer tokens or a reasonable fee please let me know Herts area but happy to travel reasonable distance. would try myself but I don't know these cars myself and I only had the Z4M for one month

Phil at CPC Performance Engineering in Amersham fitted mine: https://www.cpcpe.com/

CPC shouldn’t be far from you in Hertfordshire and I would recommend them for all you Zed needs.

turbitoz · Post by **turbitoz** » Thu Aug 27, 2020 2:16 pm

How much did they charge if you don't mind me asking at CPC ?

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