Does the 2012 Toyota Sienna Have a Power Wire Already at the Back to Power Trailer Wiring Converter

Question:

Was told by Toyota service rep that my 2012 Sienna with factory installed tow prep on engine, also had a factory installed power wire that ran to to rear of vehicle for use in powering after market trailer wiring kits. Have your organization found this to be true?

asked by: Don S

Expert Reply:

This is the first time that I have heard any vehicle had a power wire ran to the back specifically to power a converter box. It is possible that a vehicle can have a wire ran to the back for the 12 volt circuit on a 7-Way trailer connector.

The manufacturers of the wiring harnesses for the 2012 Toyota Sienna (# 118498 and # C56106) state that the connection has to be a dedicated line from the converter to the battery via the included fuse and fuse holder.

Routing the power wire is not difficult though it can be time consuming. I have included a link to an FAQ article that provides some tips on routing the wire and a video that should help.

expert reply by: Michael H