OBD2 socket install.

[HPmuirt]

Two pics attached with a highlight of the relevant area on the fusebox... Those two ring terminals (top left we can call A with the white wire and one below called B with green visible) collect the K & L wires from ECU (and other controllers)... These link to the white OBD plug.

Note the text on the fusebox sticker which clearly shows this - no schematic required.

The two ring terminals are such that we have -

A (top left) is the L-wire
B (below it) is the K-wire

The white OBD plug is wired such that pin 1 (inboard) is L-wire and pin2 is K-wire.

So what is the black 2-pin connector for then when using VAGCom as it seems to have +/- 12V?

My lead is the normal 2x2 connector and I always plug in both but I assumed that the power for the dongle came from the PC. Does this mean we only need to plug in the white connector?

Cheers n

Si

[S2central.net]

Indeed the black plug with 12V supply was originally to supply juice to the code reader gizmo... Well more correctly into the interface adapter which sits between code reader (now a PC) and car. The serial port on the PC would be destroyed by the voltages on the K & L pins - the adapter box/cable is powered off the car to transform into something PC friendly.

You can try plugging white cable only into VAGCOM but I'd be confident that it wont work - wont damage anything either as long as you have conversion cable/adapter into the PC (via RS232 or USB).

[Sonic]

Old thread resurrection

So the preferred solution to this is to run a 2x2 directly into the car from the fuse box? Then just hook up the normal 2x2/OBD -> usb cable from the comfort of the passenger seat?

The cable 6K0 970 070A doesn't seem to be long enough to run into the car from the fusebox to present a nice OBD plug inside.

[mcandmar]

I moved mine to the glovebox too. I just found an old Audi 80 in a scrap yard and cut the two diag plugs off it, you could use the OBD socket instead from any car, really dosent matter. Either way you will need a good length of wire to make the run.

[audinut]

cool mod and one thats now on the list