A fully assembled and tested Tiny ADS Interface - compatible with BMW's original ADS adapter, and with INPA and DIS and other associated programs. No software is included.

This is a budget interface. It does come fully assembled and functional, however it has no case and is delivered as a bare circuit board with screw terminals for interfacing to the vehicle. In order to use it, you'll need to run some wires from the screw terminals on the interface to the 20 pin diagnostic port on the vehicle.

  • female DB9 serial connector (COM port) to PC

  • 7-pin screw terminal header to vehicle; 20-pin connector not included

  • status LEDs: power, ignition, K, L, receive

  • service interval reset switch

  • fully compatible with INPA/DIS in ADS mode, including battery and ignition indicators; this is not a carsoft interface

  • requires a "real" serial port, as does every ADS interface in existence; will not work with USB-serial adapters

  • fully open source - all design files, both for current and future revisions, are and will forever be freely available

  • lifetime warranty - if it ever stops working for any reason, I'll fix it for the cost of shipping

As for the 20-pin connector, the best (only?) way I've found to get them is to search ebay for "bmw 20-pin". The quality is variable and generally somewhere between "poor" and "ok" but I've never encountered one that didn't get the job done and, as I said, I don't know of any better source for them.



Aug. 13, 2019, 1:03 a.m.

Hello, will it work on an 1990 e31 850i?


June 10, 2019, 11:05 a.m.

Ciao ho acquistato ADS e non riesco a configurarlo su INPA mi può aiutare?


June 26, 2019, 8:40 a.m.

I have forgotten most of what I used to know about the software half of things, so usually I send people to the place where I learned everything which is here:


It's a very good resource but please let me know if you find anything better and I'll pass the word along.


May 6, 2019, 11:50 p.m.


What software can i used for connected on my e36 m3 3.0 euro 1994 ?


May 14, 2019, 9:31 p.m.

Generally the only software you want to use with an ADS interface is either INPA or DIS which are the two that BMW wrote themselves. Most of the other softwares use some other nonstandard interface.

can not connect to the car

April 7, 2019, 6 a.m.

Good day. When connected to the car, one LED on the power supply lights up. During this period, the RX indicator blinks. And can not connect to the car.


May 14, 2019, 9:34 p.m.

If the RX led flashes then it means some module in the car is receiving messages and is trying to respond, which probably means that the software is misconfigured if it isn't able to interpret the responses.

Jason Mikado

March 31, 2018, 8:54 a.m.

Hi ~ This interface module can work on 1992 e34 525i ?
it shipping to Taiwan ?


March 20, 2019, 11:55 p.m.

Yes it works.

I've shipped many to Taiwan.

Reginald Finley

March 11, 2018, 6:57 p.m.

Do you still make this cable?


March 13, 2018, 5:42 p.m.


Reginald Finley

March 13, 2018, 9:22 p.m.

Cool, I will be purchasing one from you.

Pedro Moutinho

Feb. 9, 2018, 10:12 a.m.

hello, I made a post yesterday, and it disapeared, does this work INPA ON cars with DME 3.1? And m20?


Naïm Amarsy

July 10, 2017, 5:45 a.m.

Dear Benemorius,

Thank you very much for your projects and your site.
The ADS tiny interface will definitely help me out with my 98 E36.
However, It's very annoying to pay half of the price for shipping, i.e 15$ for France in my case.
By any chance, I have other buyings to do in the US. Four very small and lightweight pieces.
Would it be possible to ship them to you and then ship them to me with the interface in the same packet please?
I would really appreciate your help.

Thank you in advance.



March 13, 2018, 5:42 p.m.

I can't really do that, but there are some existing services out there that are designed to do exactly what you describe. I agree the price of shipping from USA to other countries is most frustrating. It has even gone up from $6 a few years ago to $16 now.


Dec. 7, 2016, 1:39 a.m.

I want to ask you if there is a easy way to convert the rs 232 signal into a signal a newer Laptop can use (maybe LAN?) without losing any type of signals \ Information I am getting from my car.

Thank you


March 13, 2018, 5:38 p.m.

Yes the data rate is very slow and you can pipe it over LAN or wifi or anything else, but the problem is that the software BMW wrote is only compatible with rs232 ports. You could write new software and then it would work.


Nov. 10, 2016, 11:13 a.m.

How can I track my order ?
I need to know when I will get it !!!

Thank you


Nov. 10, 2016, 4:04 p.m.

You should have received a tracking number by email. It could have been flagged as spam. I can resend the email if you tell me your order number.

Remus Musat

Oct. 13, 2015, 2:03 a.m.

Hy, can you check my order it`s been stuck in Chicago for a while now, LN326287539US, Order ID: 1286, thank you


Oct. 15, 2015, 7:17 a.m.

Hello. Chicago is the city where international package leave USA for the destination country, so the tracking updates pause here while the package travels overseas. Depending on the destination country, sometimes the updates resume on the USPS website or sometimes you have to get further updates from your own country's postal service instead.

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