WTB: Combox TCU & MULF PnP harness

Atomicteal_M3 · 03-10-2018, 08:19 AM

I finally decided to upgrade my CIC with Combox. Can anybody point me in the direction of who sells a PnP TCU & MULF harness for the Combox retrofit?

Scrippy · 03-24-2018, 01:18 AM

Source the the connector. Then repin and hook up. You can pull the wires from the existing connector and slide them in the appropriate pins on the new connector and plug in your combox. Then tell the car it has a combox through coding. All the answers are on here and a coding forum.

qbnlykwhoa · 03-30-2018, 11:32 AM

I've been shopping around for a PNP harness as well and people are charging way too much for just the harness. Going to just build one or do the pinout method soon. A used combox is so cheap now. Crazy how some places are still charging $1000+ to do this.

0-60Motorsports · 10-23-2018, 11:06 AM

Anyone have a good source for TCU+MULF combox retrofit harness. I'd rather buy the harness than attempt making it myself.

Atomicteal_M3 · 10-23-2018, 12:32 PM

Quote:

Originally Posted by 0-60Motorsports

Anyone have a good source for TCU+MULF combox retrofit harness. I'd rather buy the harness than attempt making it myself.

Here you go! This is where I purchased mine. I haven't used it yet as I plan to retrofit sometime next month!

https://www.ebay.com/itm/BMW-COMBOX-...-/263998335041

0-60Motorsports · 10-23-2018, 12:38 PM

Quote:

Originally Posted by BLKLYZ

Quote:

Originally Posted by 0-60Motorsports

Anyone have a good source for TCU+MULF combox retrofit harness. I'd rather buy the harness than attempt making it myself.

Here you go! This is where I purchased mine. I haven't used it yet as I plan to retrofit sometime next month!

https://www.ebay.com/itm/BMW-COMBOX-...-/263998335041

Wow I was looking at the same one. Speaking to the seller now. Thank you.

MPower7 · 02-10-2022, 02:23 PM

I have the TCU and MULF in my car. I saw a DIY where only the TCU was connected to a combox via adapter harness and the MULF cable was left unattached. Is this because the combox takes over the Bluetooth phone as well as audio? In what situation would you need to hook up both the TCU and MULF with the harness to combox?

derbo · 02-20-2022, 10:50 AM

Quote:

Originally Posted by MPower7

I have the TCU and MULF in my car. I saw a DIY where only the TCU was connected to a combox via adapter harness and the MULF cable was left unattached. Is this because the combox takes over the Bluetooth phone as well as audio? In what situation would you need to hook up both the TCU and MULF with the harness to combox?

The MULF controls the AUX I believe, so you need to repin the AUX to the Combox pins.

https://www.kufatec.com/en/infotainm...o-combox-39067

This thread is a great consolidated resource. Skip to post 4.
https://www.e90post.com/forums/showthread.php?t=1649066

https://www.e90post.com/forums/showp...72&postcount=4

03-10-2018, 08:19 AM	#1
Atomicteal_M3 Brigadier General 745 Rep 4,427 Posts Drives: E90 M3 AW Join Date: Aug 2010 Location: FT. Bragg, NC. iTrader: (28) Garage List 2007 335i [9.00]	WTB: Combox TCU & MULF PnP harness I finally decided to upgrade my CIC with Combox. Can anybody point me in the direction of who sells a PnP TCU & MULF harness for the Combox retrofit? __________________ ModeCarbon V1 CF lip/PF AG CF SS ext./ARKYM CF Diffuser/OSS AE's/B&G Springs/CF Performance Spoiler/V2 Led Performance SW/Meisterschaft GT exhaust
	Appreciate 0 Tweet Quote

03-24-2018, 01:18 AM	#2
Scrippy Lord Scrip 1812 Rep 3,012 Posts Drives: 2011 M3 Coupe Join Date: Jan 2012 Location: LA,Ca iTrader: (0) Garage List [0.00] 2007 BMW 335i [0.00]	Source the the connector. Then repin and hook up. You can pull the wires from the existing connector and slide them in the appropriate pins on the new connector and plug in your combox. Then tell the car it has a combox through coding. All the answers are on here and a coding forum. __________________
	Appreciate 0 Quote

03-30-2018, 11:32 AM	#3
qbnlykwhoa Private First Class 55 Rep 133 Posts Drives: 2011 E93 M3 Join Date: Dec 2016 Location: Central NJ iTrader: (0)	I've been shopping around for a PNP harness as well and people are charging way too much for just the harness. Going to just build one or do the pinout method soon. A used combox is so cheap now. Crazy how some places are still charging $1000+ to do this.
	Appreciate 0 Quote

10-23-2018, 11:06 AM	#4
0-60Motorsports Brigadier General 791 Rep 3,151 Posts Drives: BMW M3 JB 04 Coupe Join Date: Aug 2007 Location: Kingdom of Bahrain iTrader: (1)	Anyone have a good source for TCU+MULF combox retrofit harness. I'd rather buy the harness than attempt making it myself. __________________ Current Mods: 2004 E46 M3cs JB/CSL 2010 E70 X5M AW/BLACK 2011 VW Golf R DSG White/Black IG: @060Motorsports
	Appreciate 0 Quote

02-10-2022, 02:23 PM	#7
MPower7 First Lieutenant 90 Rep 363 Posts Drives: 11' e92 M3 Join Date: Apr 2008 Location: SF iTrader: (1)	I have the TCU and MULF in my car. I saw a DIY where only the TCU was connected to a combox via adapter harness and the MULF cable was left unattached. Is this because the combox takes over the Bluetooth phone as well as audio? In what situation would you need to hook up both the TCU and MULF with the harness to combox?
	Appreciate 0 Quote

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search