History of Old electrical wiring identification: photo guide The old style ballast and its wire could have dated from the 1950's. Aluminum Electrical Wiring Types [Click to enlarge any image] Continue reading at OLD HOUSE ELECTRICAL WIRING or select a topic from closely-related articles below, or see our complete INDEX to RELATED ARTICLES below. Is My Old Electrical House Wiring Safe? - The Spruce If you live in an old house with equally old wiring, you may or may not need to replace the wiring. Look out for these common problems. SHARE PIN EMAIL. Is My Old House Wiring Safe? By Timothy Thiele. Updated 01/22/19. Pin Share Email Steven Puetzer / Getty Images .