So it's been almost a year since I posted this, figured it was time for an update.
I replaced my battery in my remote about 2-3 months after I did this mod, mostly because the

needed hers replaced.
Since then, while the range has dropped I can still easily un/lock my truck from 10+ yards away (yeah, I didn't run 30 feet of wire and tear apart my whole truck like someone else did

). With the

truck, I practically have to be standing at the car door.
No issues with the way I ran my wire. I'll probably do what Oilleeker did next time I check on it, and gorilla tape it instead of letting it hang over the top seatbelt bolt. I wonder if I can find a small and relatively flat antenna that would match fairly close to the frequency the remotes use. Hmm, another research project....