Does Tow Ready Trailer Wiring Harness # 118517 Require a Battery Connection on a 2009 Toyota Yaris

Question:

For the T-One Vehicle Wiring Harness with 4 Pole Trailer Connector - 2009 Toyota Yaris does a line have to be run to the battery? Thank you

asked by: Tony Y

Expert Reply:

The installation instructions for the Tow Ready Wiring harness, # 118517, are correct. The power wire does need to be routed and connected to the vehicle battery. The purpose of this connection is that it provides power for the trailer lights and virtually eliminates power draw on the sensitive vehicle tail light wiring. This in turn protects the vehicle wiring and other electrical components from damage.

expert reply by: Michael H