How to Add Always-On 12V Power Feed to 7-way on 2015 Toyota Tundra

Question:

I recently installed the Hopkins 5th wheel trailer connector #41157 on my 2015 Tundra. Everything works fine and has power as long as truck is turned on or running. The problem I have is that I need to have power at the Hopkins 5th wheel connector all the time even when truck is not running or turned on. Evidently power to original 7way connector must be wired to accessory. How can I supply power to Hopkins 5th wheel connector only without causing any other electrical issues?

asked by: John

Expert Reply:

Since your truck is wired to shut off the 12V trailer power feed when it is not running (to save your truck battery) you will just want to install a separate 10-gauge power wire and 40-amp circuit breaker between your battery and the power wire on the trailer connector. You can use wire # 10-1-1 and breaker # PK54540. You will also need ring terminals # DW05705-1.

The linked wiring article will help you confirm which 7-way wire to connect to.

Keep in mind that the connected trailer will pull power any time it is connected.

expert reply by: Adam R