ive run a lot of HID's over the years, luckily my vehicles never needed the harnesses as my DRLs were always wired to a different bulb.
but every other kit ive put in that needed the relay harness has had issues.
ive used DDM, Doop, VVME, some ebay ones... and i dont even know what else.
i just bought VVME for my sierra, with the harness and im going to give it a go, but what i really want to do is figure out how to get the ecu/bcm changed to run 12v for DRL's. in a couple months im going to talk to the dealership shop foreman. there has got to be a way to do it.