samene

I have a 2011 LS460L AWD with the rear recliners but not the exec pkg/screen/etc. Anyway, I want to put a 12v cig-lighter type power outlet in the trunk for some low draw devices but would not want to limit it to that current unless necessary.
The car has a fuse box/junction block in the trunk beneath the driver side trunk lid hinge [see pic 1]. All of the fuses are present except for the 30A and the X slot (which I am guessing is not wired but it would be great if I'm guessing wrong and it were wired).
I have the 5 seat so the back of my center console has a 12v power port rather than the 120v. Likewise the rear console has no 120v outlet (and also no 12v outlet) behind the massager controls.
The junction box has a 15A fuse for "AC100/120V" and also a 15A fuse for "RR CIG" (both present) [see pic 2]. Since I don't have a AC outlet anywhere that I can find I was expecting to find that slot empty but I nevertheless wonder:
1) if I can use that "AC100/120V" slot for powering a 12v outlet in my trunk? If not which?
2) Is it best accomplished via a "Add-a-circuit Fuse TAP Adapter"?
3) How do I ground it?
4) Any tips on reinforcing the trunk liner to be stiff enough for insertion and extraction forces when using the power port?

Thank you for any help!


Pic 1 Box cover

Pic 2 Fuses in box

samene

The empty slot marked " [ / ] " is hot

I have a "Add-a-circuit Fuse TAP Adapter" that produces a fused hot wire so I guess I just run that to one terminal of the power outlet and wire the remaining terminal to the bolt holding the junction box to the body with a crimp on ring or spade terminal. Anyone done this?

DedBirdDog

You could also use a circuit tester to find something that is either switched or constant hot in the trunk and just use a line tap and blade end and ground to body.

samene

Thanks DedBirdDog. As long as I have the junction block handy I'm inclined to take advantage.