damn I'm not sure if my ballasts are working. I stopped using them for about a year and left them installed. I ended up using my halogens for that year.
For some reason my ballasts decided to work today. I believe the double cutoff issue you're having is with the factory lense. I test fired it up without the lense on and it's a sharp single line. I just need to straighten them out.
btw for the hi beam wiring, does it matter which is positive and negative? I believe the wiring from my ballasts are blue and white.
So you lock the stalk in position but the HI beams just flick on then off??? Can you post a pic of your HI beam wire/connector and the connector that hooks up to your original head light plug.
Couple things to check. Pull the HI beam connector and make sure that the 12ish volts going to it are constant when the HI's should be on. Make sure you have the pins going to the OE headlight plug pushed all the way in and properly locked into place.
There should only be 2 things plugged into your ballasts, the bulb on one side and the power plug on the other. The power plug will either be an adapter that goes from the ballast to the stock headlight connector (one for each side) or a wiring harness that will only connect to one headlight connector but connects to both ballasts. The HI beam control connector is on a separate set of wires and will not be connected to the ballasts in any way.
If you have a HI/LO harness from anyone besides DDM I will need to see a photo to be sure you have it set up correctly but they should be the same in theory (as I described earlier) from any manufacturer.