Wire Light Post Outdoors? I have a oil lamp post in my front courtyard. Which...

I have a oil lamp post in my front courtyard. Which was already prewired near a sensor to go on at darkness and off by hours of daylight. The sensor went desperate and stayed on all the time. I bought a tentative sensor (but different than previous one) that you just screw into the standard lamp socket instead of wiring. First darkness and its not working? I bypassed the frail sensor wires by removing the old sensor. The wires coming out from the ground are white, black and copper. The wires coming from the Light itself are also white black and copper. I connected the wires by color, tap and covered them. Light turns on at night but is VERY Dim..scarcely tell its ON and it considerate of flickers?Tried new bulb..same effect?? What did I do wrong..Any Suggestions?
Answers:    i am a master electrician and agree to me Began by saying that the basis that the light is dim is because the sensor that you screw into the socket is picking up table lamp from the light bulb for this reason the light is not remarkably bright. the best thing to do is to buy a post flimsy photo cell or sometimes called a pin photo cell. on the photo cell you enjoy a black wire, red lead, and white wire. you connect the black cable coming out of the ground to the black wire on the photo cell afterwards the black wire for the street light to the red wire on the photo cell. afterwards connect all the white wires together and later both of the copper wires together. that should solve the problem.
Mike:
Invest in a $10 voltage tester. That channel you can check the voltage in the wires to generate sure you know which ones are hot. It sounds like you did it right, but what you may not know is if the other cease of the wire is done correctly. The copper cable is the ground and should not have any voltage. The black rope is hot an should show voltage. The white wire is dull. The voltage flows out of the black wire to the white telecommunication and rapidly reverses flow (AC or alternating current) The copper ground telecommunication is designed to ground any stray voltage so that it does not flow through you if you touch a fixture.