The battery and alternator are in good working order. The headlights are not as bright as they should be. Could it be these bulbs are just crappy? What about these aftermarket lenses, could they have poor design that would contribute to the problem?
What is the bulb number?
Does your headlights get brighter with higher rpms?
You could do a volt drop test at the headlight grounds.
Also look at the reflective material is still shiney
Grounds are good. Batt resting voltage 12.8. System run voltage at idle 14.7.
I woild have stopped after this.Aftermarket headlights....well..suck.
I woild have stopped after this.