Fuse location for trailer hookup / 7 pin connector power?

Hi all,

I'm trying to figure out exactly which fuse controls power to the 7 pin connector hookup on my 2020 Tundra. All the trailer running lights are working but when I plug in my electric trailer jack, it is not getting power.

It's not the jack (my dumb ass bought a new one thinking it was) so I think it must be the fuse.

Appreciate any guidance, thank you.

 

I believe you are talking about connector R18.

This is my interpretation of what each pin is form the diagram below
1) Left Turn
2) Tail Running Lights
3) Ground
4) Reverse Lights
5) Battery Power
6) Brake Lights
7) Right Turn





I think you are looking for Aux power at the pin which would actually be on Pin #5 and not Pin #7

You can see Pin #5 is power coming from the 40A Sub Batt Fuse. However a relay activated by the 5A ECU-IG1 No2. fuse allows the power to flow from the 40A fuse into Pin #5.

First thing I could do is get a voltmeter and check for voltage on Pin #5. Then check both fuses listed above.

 

Exactly what I was looking for! Thank you very much.