If you want to listen to an old single-speaker monaural radio through stereo headphones, you’ll need to install a headphone jack to do so. Choose either a 1/8- or 1/4-inch headphone jack and decide if you want the speaker to continue playing or not when you plug in the headphones, which dictates the selection of either an open or closed circuit headphone jack. After these decisions, the process is relatively straightforward. Tips Warnings Writer Bio

How to Wire a Headphone Jack Into an Older Home Radio - 61