JB4tech.com - International Turbo Tuning Discussion
Sakis335's Avatar
Sakis335 Sakis335 is offline
New Member
Posts: 2
Join Date: Nov 2021
Car: 2008 335i e93
Default JB4 N54 Wiring Harness - 11-29-2021, 02:03 AM

Hello dear comunity,

I recently got my hands on a JB4 for my e93 335i.
My problem now is that the harness that it came with is kinda suspicius and i can not find out what is going on. I would like to replace the usb data cable with the bluetooth connect kit but its connected to the main harness.

So i thought someone on here could defitely help to identify the problem and help me find a solution.

If you need more info like pin nr. etc let me know.
I want to remove the usb and attach the bluetooth connect kit.

Here are some pictures of the botched harness

20211128-193849980-i-OS — ImgBB
20211128-193856732-i-OS — ImgBB
20211128-193909208-i-OS — ImgBB
20211128-193921107-i-OS — ImgBB
20211128-193945893-i-OS — ImgBB
20211128-201511254-i-OS — ImgBB
20211128-201521836-i-OS — ImgBB
Reply With Quote
Steve @ BMS/Fuel-It!'s Avatar
Steve @ BMS/Fuel-It! Steve @ BMS/Fuel-It! is offline
Posts: 21,115
Join Date: Oct 2012
Car: 135i
Default 11-29-2021, 01:46 PM

A new harness can be purchased here...


The bluetooth adapter can be purchased here...


Click on our banner to visit our website!
Video of our Stage 2 LPFP upgrade installation.

BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways.
Reply With Quote
Sakis335's Avatar
Sakis335 Sakis335 is offline
New Member
Posts: 2
Join Date: Nov 2021
Car: 2008 335i e93
Default 11-29-2021, 02:05 PM

Hi Steve, I would like to fix this one since I don’t want do buy another one right now.
Plus I am on Europe and could not find the harness alone
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

vBulletin Skin developed by: vBStyles.com
Copyright 2007 - 2022, JB4tech.com