https://boston.craigslist.org/nos/bpo/d/salisbury-50-amp-adapter-2x25/7921173633.html
50 Amp Y Adapter (2x25) - boat parts - by owner - marine sale - craigslist
This is a lightly used 50 amp Y split to 2 (25 amp) yellow adapter cable Marine Boat Electronics
y adapterboat parts