Here's the bulb sizes for the Accord Sport if you need them and I assume they all use the same bulb size. Not one to change bulbs because I don't want to deal with load resistors and wiring, but I heard someone was happy with Corsomotion
Backup....4014- T10
Rear turn....7440- T20
High beam...HB3- 9005
Map, Overhead, trunk...194- T10
Vanity...Festoon 28-29mm
I'm sure someone else had already replied to this, but the
rear turn signals are actually 7507, at least on 2.0T Sport.
The 7440 bulb is one with flat connector that just slides in, which won't work on the car. The 7507 is one with metal body, the two little notches are I think at 150 degrees from one another, it pushes in and turns. Amazon has some decent ones, I've ordered OXILAM 7507 from Amazon (mods won't let me include a link). They are STUPID bright, too bright actually. My previous ones from LUYED (now not available from Amazon) were great for a year and half, now one doesn't work, they're sending out replacements, so I'll be returning the Amazon ones. They did work well, no hyper flash (until the one stopped working obviously).
When the replacements get in, I'm going to sharpie over the LEDs with a silver color probably to dim them just a notch. Right now the one of the two left over (one still works) I've sharpied over the individual LEDs/chips with a black sharpie, super easy to do, but now I realize black is a bit dark. Might go either every other LED blacked out, or all silvered-out or whatever other colors Sharpies come in.