Another magnum swap thread

I have a question for you guy. I have collected all the needed parts for doing the magnum efi swap into my Barracuda. I have a fresh built 5.9 and using the 46RE, I have an efi tank, pump and sending unit from Magnum Mopar, as well as a fresh rebuilt 98 harness, I have a 98 Ram brain ready to go. I am adding larger injectors, whipple charger and a larger throttle body. This will all have to be tuned. So I have purchased a tune from FlyinRyan. Which is all nice and dandy cause it doesn't mean crap to me unless I can find an under dash harness for the OBD2 port. Which leads me to the question...
What have you guys done about the OBD2 port harness? Did you build your own? or Did you strip it from the under dash harness?

If you built your own do you have a schematic available that i could use?

If not I have found a harness at the cost of $200. Which seems a bit much for a harness I'm only going to use 5% of the rest will end up in the trash... ugh

Thanks any info on this will help :-D