The factory headlights were LED and had a monitor circuit, which is probably disconnected on your aftermarkets. You'll find a brown or light blue wire in position 2 on each of the low beam connectors. If you ground those wires, I think it will eliminate the error display (0V is the "okay" signal to the cluster on the monitor lines). However, the cluster may also be looking for 12V on the monitor line when the headlights are switched off. The documentation doesn't say, and I have no way to test it. If simply grounding the monitor lines doesn't clear the error, you'll need to rig up a relay from the low beam supply wire to ground the monitor lines only when the low beams are lit. Let me know how this works out, I'm sure other folks have the same issue.