My last idea is the reverse of the no highs. I think you need to look at the connection between the truck harness and the new bi-xenon harness. If you look at the troubleshooting at the bottom of this page -> http://www.headlightreviews.com/kens...t-installaion/
All you need is a 12v light bulb tester to check this.
Disconnect the harness from the harness
Connect one end of the lightbulb tester to a good ground.
Turn on your lows and touch the other end of the bulb tester rot each of the 3 connections on the harness. Note which of the 3 causes the light to go on.
Hit your highs and do the same thing.
Now, you know which connection is low/high/nothing( ground).
Take that info and compare it to the new harness to see if the connections match. Low/Low, high/High and ground/ground.
If not. You can move the wires in the new harness by releasing the pin appropriate pins and then moving them to where they need to be.
After this. If no one else has anything I would remove and return the lights. Then buy from someone that can support you.