You're doing what I've been trying to do, buy a cheaper wiring harness and just sort out some things that don't work very well. Mistake. Save your money and go straight to a modern $100 replacement. You'll still have to do whatever wiring you thought was necessary, but at least once you're done it will work. Much luck.
Compact USB-Powered Desk Fan With Four Speeds, Strong Airflow, And Quiet Operation - 310ยฐ Adjustable, Portable Mini Fan For Home, Office, And Bedroom (Navy Blue)
35 Review
SilverStone F1 Monaco S radar detector
82 Review
Bundle: Bracket 3 Cup Set & 6 FT Power Cord for Beltronics & Escort Radar Detectors (Accessory Bundle)
34 Review
Radar detector Inspector Spirit
39 Review
ASA HS-1 Aviation Headset: Elevating Communication and Safety in the Skies
8 Review
๐บ๏ธ CARRVAS GPS Navigation System for Car, 2021 MAP 7inch Truck GPS Navigation, Spoken Turn-by-Turn Directions, Speed Warning, USA, Canada, Mexico, Lifetime Maps Update
9 Review
๐ง FARO Aviation Headset Converter: Low to High Impedance Adapter for General Aviation (GA) and Military Headsets
9 Review
โ๏ธ Enhance Your Aviation Experience with the David Clark H10-13.4 Aviation Headset
9 Review