Don't forget to check the ground side of the circuit as well. A loose or dirty ground will drop voltage and result in dim or intermittent light problems, even if the hot side is in good condition. Try flushing a toilet with a plugged or restricted drain system, and plenty of water in the tank!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!