this ended up being my solution for this problem - a Y splitter...not the cleanest way to do this but other than wiring in a 2nd one its the cheapest/easiest

Amazon.com: [Upgraded Version] Electop 1 to 2 Car Cigarette Lighter Splitter Adapter Power Charger Port, 12V 24V Plug Socket 2-Way Splitter Y Adapter, 10 inch Cigarette Lighter Extension Cord 16AWG with 15A Fuse : Automotive
Buy [Upgraded Version] Electop 1 to 2 Car Cigarette Lighter Splitter Adapter Power Charger Port, 12V 24V Plug Socket 2-Way Splitter Y Adapter, 10 inch Cigarette Lighter Extension Cord 16AWG with 15A Fuse: Cigarette Lighters & Parts - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
