There is not an option for a plug-in brake controller in the traditional sense for your 2009 Tiffin Allegro motorhome, so you would need to hardwire in a brake controller like the Tekonsha Prodigy P3 Trailer Brake Controller # 90195.
The only exception to that would be Curt Echo Wireless Trailer Brake Controller # C51180.
Since you mentioned you already had a working 7-way, you would be able to plug the Echo right into the 7-way with absolutely no additional wiring necessary. I have added... view full answer...
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