Sorry, but I, for one, am not too clear about what you are saying, other than lights not working well. Test/probe sockets with a voltmeter, if not satisfactory.., disconnect your battery, clean your sockets,(old point file, or small screwdriver, etc.), and clean associated grounds, and again test with a voltmeter. Before re-installing bulb connection into socket try another pre-emptive test by connecting some wire to negative prong on headlight, then to ground, and with another wire check the high beam to the positive post on the battery.., then the low. That last thought is just to make sure that you do not have a defective chi-com bulb(s). If that process of elimination shows no power to your sockets.., then you must ...search along wires, as per your diagrams. Ever notice that vehicle coming at you where the lights blink off momentarily on a rutted road? Bad ground in the lighting wires, or a short. Bad hi/low beam switch will cause the lights to go out. Happened to me on a curve with a clift at 45mph, stopped quickly.., pulled out a flash light and drove to a safe place to fix the switch. Hmmm.., old days, lol, floor mounted beam switch. (Hellava easier switch to fix!).