I\'m about to fix the aluminum wiring in my house using Alumiconn connection, so I know that every outlet and switch plate need to be done, do the light fixtures need to be done as well? And also does anything need to be done with the main circuit breaker?Anywhere you have a tap the new method should be done. The kitchen outlets that draw more amps usually have the biggest problem but with vacuum cleaners that draw about 10 or 12 amps all outlets are a problem. The wires should be taken off all outlets and tapped to a short copper wire with approved method and the the copper wire is put to the outlets and also switches. All taps have to use the right type of paste and right crimps and or wire nuts. The main breaker if alum wire should be taken off wire brushed and have the right type of Penetrox paste put on wires and put back. If the breaker can fit one of those crimp ends you put on alum wire and insert in breaker better yet. I did one house years ago and it is a job. I was able to fish new copper wire to all the kitchen outlets all the way back to panel.Normally, the houses are ceiling with copper wires on the walls instead of aluminum. Because of safe secure and also cost effective. Better to replace all the things.Aluminum twine, in and of itself, isn\'t the threat. you ought to purchase receptacles that are rated for AL/CU Aluminum and copper. If the twine is undamaged, replace the receptacle with an AL/CU rated receptacle, and be better careful how lots torque you place on the screws that carry the twine down. AN AL/CU rated receptacle costs around $3.50 compares to the cheap $0.fifty 9 copper purely rated junkers at domicile Depot® you do no longer could replace all the aluminum wiring. In different situations, you are able to couple AL to CU twine with approved twine Nuts that are rated for AL/CU. BE better careful approximately BEND RADIUS AND TORQUE specs!I never understood why aluminum wire was ever used, it is inherently unsafe. I would replace the whole thing with copper.Other related question