I think I found some information that'll help you install a brake controller, like the Prodigy P2 # 90885, but we don't carry a direct plug-in adapter for that connector you found.
From my research it is the correct connector so you've found the correct wires. You need to cut off the plug you found and test each wire for function to make sure you know which is which and then hardwire them to the controller. Use a circuit tester like # PTW2992 to test the connector you found. The wire... view full answer...