69 Barracuda Thumbwheel AmFM And 150 MPH Speedometer

my thumbwheel has been filling the dash-hole since 1999, and has never had the power hooked up. It's just in there to fill the spot. Before that, it was in a different car, that I bought in 77. It was never turned on in that car either,lol. Prior to 77, I cannot say.But IMO,a 2watt radio, makes just enough noise with the engine running to be aggravating,lol.