Wiring Harness 118578 Installation in 2016 Toyota RAV4

Updated 05/31/2018 | Published 05/29/2018

Question:

I do not have the instructions I watched a diy video for wiring a 2016 Rav4. The video showed the black wire from the convertor being connected to the positive battery terminal and the white wire going to ground. Im an old guy and the black wire has always been the ground. Which should i connect to the positive?

asked by: Judson J

Expert Reply:

In most modern trailer and vehicle wiring the ground wire color used is typically white. This is indeed true for installing the Tekonsha 4-pole wiring harness # 118578 in your RAV4. Often this white ground wire will have a ring terminal which can help us sort out its function. The black 12V power wire does indeed connect to the battery + terminal through the included fuse holder.

For reference, I linked the written instructions and a video showing this wiring kit installed in a 2018 RAV4 like yours.

Long ago when my Dad was a young man building homes with my grandfather the convention was indeed a black wire for ground.

expert reply by: Adam R