Why are my 2002 Acura RSX headlight and high beam dim when replaced?

Question

I have replaced my headlights multiple times over the past year, but recently I changed out the passenger side headlight with a bulb that I've used before from O'Reilly Auto Parts. The dilemma is that this time the bulb shines VERY dim (like a crappy flashlight low on batteries). I went to AutoZone, got another bulb, and the same thing happened. I then took a look at my high beam on the same (passenger) side which I had replaced recently, and it was also dim. I have also recently changed out my battery because it died. I think the old battery may have contributed to why I was having to change the lights every month or so. The driver's side lights still work properly though.
I can't figure out why there is such little power going to those lights. Perhaps it is the bulb that is at fault? It seems like a more complicated electrical problem, but I want to at least try to figure it out before taking it to a shop.

Answer 1

Bad ground fault

Answer 2

Military Grade Tactical Flashlight - http://FlashLight.uzaev.com/?lNIe

Answer 3

the high output light bulbs draw more power than the electrical system can provide them, so the wires get hot which causes increased resistance and burns out the bulbs. if you get an aftermarket lighting harness, that will fix our problem

Answer 4

could be a bad wire going to the headlight. so its not getting the proper voltage being sent to it.