Honda ECU USBMOD3 Dongle design

Click on the thumbnails to get a very high resolution picture.  Sorry about the fuzzy closeups.  I got a little too close for the macro lens.

I soldered a pin header into the CN2 holes on the ECU board.  I drilled a hole for a 6 pin DIN female connector, and used spare shielded wire from a scrap wiring harness to connect the header connector to the DIN connector: (The blue wire is unused, unless you were to make an RS232 dongle.)

I should have used a smaller DIN connector.  I drilled the DIN connector hole a little too close to the top of the ECU case as you can see from this picture.  If you do this, you might want to shop for a smaller connector.

Here is the header connector on the pin header.

Here is the dongle I made with the USBMOD3

I used a bit of vector board and wire to make the needed USBMOD3 connections:

Hope this helps.