I have a rear tailgate garnish kicking around that lights up the Civic logo and was thinking of putting it on the hatch. Is anyone familiar with how this should operate? I believe this had a power inverter which I don't have. But I'm willing to try getting one at an electronics store and make this work. Should I just seek the OEM inverter? If there's any knowledge on this it would be greatly appreciated.

Garnish looks like this:

 

I figured it out...
I got the original power inverter which steps the voltage down to 0.700VDC, put power to it and it lights up.
If you have one of these garnishes and don't have the OEM inverter, get one that steps 12VDC down to 700mVDC and it will work. Polarity does not seem to matter on the garnish itself.

Many people have taken a heat gun to the removable EL piece of the garnish (with the Civic logo) and have separated the clear plastic part from the back piece with a thin cutter of some sort as there is only glue around the edge (supposedly). From there they replace the EL sheet with a new one. This one is all original and still working (and MINT) so I will leave it that way for now. I will definitely put this on my car at this point.

Here it is lit up:


Civic EF9 hatchback Honda Access rear garnish lit up