Wiring Harness for Prodigy P2 on 2020 Ram 1500 SLT Without Factory Brake Controller
Updated 11/17/2025 | Published 12/07/2024
Question:
2020 Dodge Ram SLT 1500 W/O factory Brake controller, What will I need as far as harness adapter to splice into! Prodigy 2 was one I was guessing for a 2 axle horse trailer!
asked by: Stephen J
Expert Reply:
Hi Stephen; even without the factory brake controller you should have the brake controller port under your dash. The Tekonsha Prodigy P2 Trailer Brake Controller # TK78HR you were looking at comes with the custom wiring harness for installation so that is everything you need. This brake controller is incredibly reliable and will work well with your tandem axle horse trailer.
Product Page this Question was Asked From
Tekonsha Prodigy P2 Trailer Brake Controller w/ Custom Harness - Up to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Plug-In
- Under-Dash Box
- Under-Dash
- Up to 4 Axles
- LED Display
- Single Trailer Only
- Tekonsha
more information >
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Robin H.
11/17/2025
Hey Stephen, how did the Prodigy P2 work out with your Ram and horse trailer? It sounds like the included harness made the setup pretty simple. Your update could make it easier for others towing similar trailers.