As of MAY 20TH 2026 I am still accepting orders for custom bench / boot-mode harness contact via email tunedbyv3@gmail.com and then arrange payment please don’t use any old stripe links they are dead.
I take time and work very hard to make sure I provide quality work!

Need a Professional Quality wiring harness that will help you easily and efficiently enter boot-mode on your ECU? Well your in luck because you've come to the right place!.

My wire harnesses are made with extreme care and precaution. Close attention to detail is paramount through out my workflow and I am confident that it shows in the images shown below.

** Key Information
**I do all of the work by hand.
**The ECU connector for your specific ECU along with the OBD2 connector port are sourced from 1 of 4 local stink n pull self serve automotive parts locations near me.
**I am a perfectionist and to maintain a precise level of attention to detail and aesthetics of the harness, I carefully search for connectors that are in as close to perfect condition as possible.
**All of the wires for any of the live lines for the harness are replaced with fresh brand new 18awg wire. Quality copper wire too, not cheap crap.
**With extreme attention to detail and to ensure the harness can withstand years of use and abuse, I solder all of the connection points carefully using bernzomatic rosin core electronic solder.
**All wire to wire connection points are protected by heatshrink tubing after being soldered for added protection and to deter the possibility of the harness creating a short or fire.
**Each harness is crafted using the same overall design concept as the images shown below.



I specialize in creating harnesses for Bosch ME7.1 ME7.1.1 and ME7.5 ECUs but I can put together a harness like this one for any ECU provided a pinout can be found on google. So just ask and I'm sure I can make it happen.

Cost: I charge $75 for each harness.

Payment: Contact me via email to arrange the payment method easiest for you
I guarantee a functional and fine quality premium product. Thank you.

I initially learned how to assemble a boot-mode harness in thanks to fellow member @k0mpresd thread on audizine.
This is a link to the thread I learned how to start making boot-mode harnesses with.
http://www.audizine.com/forum/showthread.php/445065-how-to-build-a-bench-flash-boot-mode-harness-for-your-me7-ecu?s=0dd4c0b926a9eb7c6e245b0e0fbfa655

Your more than welcome to try your hand at making a boot-mode harness yourself using the above link as your guide.
I offer this service/product for individuals who wouldn't identify as "crafty" or "diy'er"
And even if you are a DIY'er, maybe you need to enter boot-mode a lot and you want something with a more professional and presentable look and feel to it.

Regardless I just wanted to spread the love by sharing the kind contribution @k0mpresd made with any individual on a tight budget who needs a boot-mode harness but can't afford to buy one from me.

Note* the above guide is for ME7.1 ME7.1.1 and ME7.5

Sure?  Not trying to start a war, just pointing out a funny spelling mistake.

« Last Edit: Yesterday at 06:22:02 PM by roycerollz5950 »

VERY nice work man!

I'm tempted to sticky this if you think you'll provide this service long term..

An inline switch would be a good idea.

Well the two harnesses shown above are for ME7.5 ECUs and for those harnesses its only necessary to add one additional lead so you can ground pin 24.
As soon as I receive an inquiry for a harness I'd imagine that the individual contacting me will likely disclose the type of ECU they are seeking a harness for.
At that point I begin searching the internet for a pinout as well as any information I can find regarding the procedures involved for entering boot-mode and that would provide me with the details necessary to determine what connectors, leads, type of resistor and any other relative info in order to create a harness that will allow the user to efficiently and safely (as safe as I can possibly offer, I'm going to add a disclaimer too) enter boot-mode or connect to his or her ECU outside of the vehicle.

Long story short no matter the ECU type, I won't commit to a transaction with anyone that contacts me, without first gathering enough details and information regarding the individuals particular ECU to determine what specifications to produce the harness with. If I cant ensure the harness will operate properly as intended then I'm not going to continue with a transaction.

Well that's unfortunate.  OP should 'splain himself.

What sort of harness did you buy from him?   Surely you already have a ME7 bench harness, yah?