1954 Hudson backup light power source

Ray, If you have a Hydramatic/Automatic transmission,then hook it up to the neutral safety switch. Use the two bullet terminals on the switch and run the wiring back to the backup lights. That way when you put your car in reverse the lights go on. If you don't have a Hydramatic/Automatic tranny then put a manual switch under the dash. Hook up power from your tail light power line at the rear junction block.