Having looked at various web pages offering VAG-COM cables at silly prices I'm after a wiring diagram and connector details for the thing.

We wire hundreds of looms at work each week and I can assure you that the VAG-COM lead would cost less than

Are you offering to make serial cable for use with VAG-COM?

Please remember that any plug connecting to the diag port on your car should have a longer earth pin than the others to prevent damage to your vehicle ECU's.

Having looked at various web pages offering VAG-COM cables at silly prices I'm after a wiring diagram and connector details for the thing.

Check out www.andywhittaker.com and have a look at his OBDII hardware page. I believe he sells the "blueprint" to his circuit board for not much money......

Chris

Are you offering to make serial cable for use with VAG-COM?

If I can find the info then yes, I would be offering a VAG-COM cable for sale.

Start a list??

On the SK Pang website are details of the intelligent interface rather than the optical type.

The chips to make the intelligent interface are available from SK Pang and cost abot

Cheers - I'll keep you posted

Have a look at this site:

http://www.planetfall.com/~jeff/obdii/

There are schematics for an opto-isolated RS-232 to OBD-II interface, as well as a PCB layout. It doesn't actually include the ODB-II connector, but the pinouts are compatible with one of these:

http://www.gendan.co.uk/viewproduct.php?product=STNCBLO2

I can even give you the RS part numbers for the components:

110-185 Opto Coupler, transistor, UL E524 Approv

294-312 Transistor, Bipolar, NPN, 2N3904

446-5209 Connector, rectangular, multipole, D, pl

446-5243 Connector, rectangular, multipole, D, so

261-176 Diode, Rectifier, 1N4004

115-607 Capacitor, metallised polyester, film, m

148-506 Resistor, metal film, 0.25W, 1%, 1k

148-736 Resistor, metal film, 0.25W, 1%, 10k

148-540 Resistor, metal film, 0.25W, 1%, 1k5

149-026 Resistor, metal film, 0.25W, 1%, 150k

I built one for myself, and it came to about

Would a USB interface cable be more difficult/expensive to make?

http://www.gendan.co.uk/viewproduct.php?product=STNCBLO2

Is this the same type that sells on ebay for about

Is this the same type that sells on ebay for about

Cheers I thought it was very cheap !