Dumb dash ground question

Thanks for the info. When it comes to the flashers what do i asks for a my local napa.
You can get one thru Amazon similar to this one. Edit: Same flasher for both turn signal and hazard.
United Pacific Heavy Duty 12-Volt LED Flasher, 2 Terminals, 18 Gauge Insulated Ground Wire, 2-Pin LED Flasher, Plastic Body – 1 Unit (Part No. 90650)