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How Much Power/Amps Does the Tekonsha Prodigy P3 Draw  

Updated 12/02/2019 | Published 11/30/2019

Question:

Can you tell me what a typical initial surge current Amps or power Watts is for a Tekonsha P3 brake controller when brakes are initially applied? Im mostly running this with a single axle trailer, but will occasionally use it with double axle trailers. My tow vehicle has a 24 volt system, so I will be powering the controller with a 24V to 12V DC to DC converter. I need to make sure I size the converters peak capacity to handle the initial surge when brakes are applied. Im specifically interested in the Tekonsha P3. Im familiar with that controller, since I have it installed in my other vehicles. However, since this vehicle is an antique military truck, Id consider other suggestions you may have for controller - especially those which may allow the main controller unit to be mounted remotely, with just a small control knob on the dash.

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Helpful Expert Reply:

The Tekonsha Prodigy P3 Trailer Brake Controller part # 90195 will draw 1 amp of current per volt sent to the trailer brakes on a tandem axle trailer and 1/2 amp of current per volt sent to the trailer brakes on a single axle trailer. Therefore, the max amp draw would be around 12 for a tandem axle trailer or 6 for a single axle trailer. In order to transfer the Tekonsha Prodigy P3 from one vehicle to another you would need both the Pigtail Wiring Harness part # 7894 and the Replacement Mounting Bracket Kit part # TK5906.

For a wireless brake controller that would not require any splicing into the vehicle you could go with the Autowbrake Electric Brake Controller part # 3430001 which installs completely on the trailer and uses a remote for the manual override feature. That said, you would still need to make sure the controller is feed 12 volts. The only brake controller we offer for a 24 volt system is the Redarc Tow-Pro Elite Trailer Brake Controller part # RED44FR which is controlled via a control knob on the dash like you wanted.

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Review of Redarc Trailer Brake Controller - Tow-Pro Elite - RED44FR
Review of Redarc Trailer Brake Controller - Tow-Pro Elite - RED44FR - Video
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