Reddit reviews TronicsPros 10 Male + 10 Female 12V DC Power Connector Plug 24V 5.5 x 2.1mm Barrel Jack Adapter Socket DIY Screw Terminal Connector for CCTV Camera, LED Strip Light, DVR, Car Monitor System, etc.
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Product Name: DC Power Connector, DC Male + DC FemaleConnector Type: 5.5x2.1mm DC AdapterMaterial: Metal, PlasticApplication: for CCTV Camera, LED strip lights, or other electrical devices.Package inlcudes: 20 x DC Power Connector (10 x Male + 10 x Female)
https://www.amazon.com/gp/aw/d/B01FT3BIXK/ref=mp_s_a_1_1?ie=UTF8&qid=1518401505&sr=8-1-spons&pi=AC_SX236_SY340_FMwebp_QL65&keywords=dc+plug+terminal&psc=1
From the picture I was a little confused. If it's a DC power plug (from the bottom left of the picture), you could use this to cut it down and re-terminate with this screw down terminal adapter. Just the gender that you need.