That would be the one , if it's anything like my coach.
20 amp on mine, is the trans feed.
Solder your connections , butt connectors will always fail , if exposed to the weather.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.