How to Copy VHS to VHS?

In order to copy VHS tapes to VHS tapes, you would either need a dual deck VCR, or 2 connected VCRs. If using 2 separate units, you would connect the Audio and Video outputs from one unit to the input jacks of the other. Place the recorded tape in the one you connected the output from, and the blank tape in the one that is connected as input. Then press Play on the the output device and Record on the input device at the same time.