Will Tekonsha Prodigy P3 Installation Require Relay on 2009 Porsche Cayenne
Updated 09/14/2025 | Published 05/22/2025
Question:
Do you have a Tekonsha wire harness that doesnt require a relay for the Prodigy P3?
asked by: Damon S
0
Expert Reply:
Hi Damon; as far as we know you will still need the relay to install the Prodigy P3 # 90195 on your 2009 Porsche Cayenne. There isn't a wiring harness that can work around this. However, you will not need to assemble your own wiring harness since you can use the # TK22FR for plug and play. Follow the instructions below from the tech bulletin to add in the relay. Let me know if you need anything else.
expert reply by:
Robin H
0
Tech Bulletin
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(click to enlarge)
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Robin H.
9/12/2025
Hey Damon, did the Tekonsha Plug-In Wiring Adapter work out for your Prodigy P3 installation on your Cayenne? I'm curious to know if everything went smoothly, as it could help others in a similar situation.