How to test for voltage on the tow vehicle 7-pin connector
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This discussion was created from comments split from: Prodigy RF brake controller inoperable - Resolved.
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Hi - I am trying to solve a Prodigy pairing issue, Is there a way to test to see if the 7-pin has a charging wire installed without hooking up the T@B? (eg; is there a device i can purchase, or can uhaul or somewhere test it)?
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https://tab-rv.vanillacommunity.com/discussion/comment/165395#Comment_165395You will need a multi-meter to test the Aux 12V. Black lead on multimeter goes to ground on the 7-pin, red lead goes to the Aux 12V. (See diagram in the above link.). You should get around 12V, depending on the voltage of your vehicle battery.(I used the search function to find “wiring for 7 pin).Verna, Columbus, IN
2021 T@B 320S Boondock “The T@B”
Towed by a white 2019 Ford F-150 4x4 Supercab, 3.5L V6 Ecoboost “The Truck” -
Here is another option. Just do a search on Amazon for 7 pin tester:

Sharon / 2017 T@B CSS / 2015 Toyota Sienna Minivan / Westlake, Ohio -
Walmart sells a similar item. Rides along with me in my under seat toolbox.2022 TAB 400 Boondock, 2019 Toyota Tacoma Sport 4x4
2018 TAB 320 Boondock (previous)
Odessa, Fl.
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