Troubleshooting Prodigy P3 Showing No Trailer Connected to Trailer 5-Way Connector

Published 07/14/2023

Products Featured in This Question

Trailer Wiring Junction Box

(824)

$35.53

Ring Terminal - 12-10 Gauge Wire - 3/16" Ring ID

(71)

$1.17

Question:

Tekonsha P3 shows no trailer connected and no output voltage all the other voltages are reading I have a 7way to a 5 flat connector 2004 Toyota Tacoma pulling a magic tilt trailer

asked by: Mitch K

Helpful Expert Reply:

Your Tekonsha Prodigy P3 # 90195 on your 2004 Toyota Tacoma is showing no trailer connected because you only have the 5-Way flat connector on your trailer. The 5-Way carries the basic trailer light functions and that 5th pin is typically for the reverse lockout function on a trailer with a hydraulic actuator. Your trailer needs to have a 7-Way connector with wiring running to your trailer brakes in order for the P3 to properly recognize it and send the power to your brakes.

If your Magic Tilt trailer really does have a 5-Way with that 5th pin going to your trailer electric brakes then you need to add a Junction Box # 38656 and 7-Way Wiring # H20046, as well as a ring terminal # 44-5310A for each wiring connection in the junction box. The nice thing about the box is that everything is labeled so connecting your wiring is much simpler than splicing everything together.

expert reply by: Jon G