Alien Pinball Brothers pinball machine - Properly powering additional back box lighting

Make sure you have the thing unplugged while working on it.... should be common sense... but you never know. :) ALITOVE 12V 5A 60W Power Supply Adapter Universal Regulated Switching Transformer AC110V to DC 12V 5amp Converter LED Driver for LED Strip Light CCTV Camera Security System by ALITOVE https://www.amazon.com/dp/B078RY6YY3/... White LED Strip Lights, GuoTong Waterproof cuttable 300 SMD 2835 LED Tape, 6000K 12V 16.4ft/5m Flexible Ribbon, Kitchen Cabinet Lighting, Outdoor/Indoor (White(16.4ft)) by GUDU LIGHTING https://www.amazon.com/dp/B075LB9HK2/... Baomain Insulated Fork Spade Wire Connector Electrical Crimp Terminal 14-16AWG(1.5-2.5 mmq) USA #8 Pack of 100 https://www.amazon.com/dp/B01B1DL4OA/... Muzata 6-Pack 3.3ft/1Meter 8x17mm U Shape LED Aluminum Channel System with Cover, End Caps and Mounting Clips Aluminum Profile for LED Strip Light Installations U1SW WW, LU1 by Muzata https://www.amazon.com/dp/B01M09PBYX/...