Welcome to iRV2.
I installed dozens of the Prodigy brake controllers , before I retired from a Dodge dealer in 2007; not sure about that model number though. Never had one come back with problems. Most times I only had the truck during the install, so I couldn't road test with the trailer , but never had a customer come back saying they couldn't get everything working from the instructions.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.