As any long-term owner here knows, we all resent not having a button inside to pop the trunk. Today I was motivated enough to solve this problem for myself.
Behind the trunk lid's carpet liner, the wiring connector leading to the exterior trunk release switch has four wires, one pair thicker than the other pair. My thoughts were like: "The thick wires must be the power and the thinner wires must be for signaling." So I shorted the thin wire's pins together, which made the trunk release activate (Awesome, good guess!).
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^ This is the connector, it is hard to see in the picture but the pair of wire on the right are thinner than the pair on the left.
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^Don't mind the white wires, those are for my tail lights.
Here's the fun part. I spliced (with spare speaker wire... it works) into the wires near the connector (Yeah I'm sure the same wires are in the centre console somewhere, Oh well.) and piggy-backed along the trunk's wiring harness into the trunk itself. Having the trunk carpet liner on the left hand side removed, I piggy-backed further along the wiring harness to the back of the trunk, under the back seat, under the left side door sills, and up into the dashboard. after removing the front-left side's door sill panel, I removed the roughly triangle shaped plastic cap on the end of the dashboard, followed by the lower panel under the steering wheel that houses the headlight knob. From here I found a spot that I liked for my push button, so I whipped out my drill and bored into the panel. Put the push button in, finish your wiring and put everything back together. The button works great. Now I feel great about all this work, but all I have to show for it is a lousy button
Here's the button before I had everything back in one piece.
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(Oh yeah, there is a screw for the panel with the headlight knob behind the triangle cap (to the left and around the corner from the knob). I found this screw AFTER I pulled the panel off

Please remove the screw before you pull the panel out

Luckily, it was an invisible mistake by the end.
If people find this useful, could someone post instructions and pictures about removing the trunk liner and the location of the wiring harness? I dirtied the sheets by taking only three pictures, didn't think to take more until I was already finished...