Here is a Lionel 22958 Dash 9 Electrocoupler Kit. Now you can add Lionel ElectroCouplers to your Command-equipped engines that didn't come with them. All releases of the LCRU will operate ElectroCouplers. Some soldering is required.
California Proposition 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling and Consult with your physician before using this product.