sooo I totally feel u on the CT4 windshield—it’s kinda tight in there! honestly, you gotta think about how much you wanna mess with the wiring vs how much you want that clean look. I’ve tried a few setups and here’s my take:

1. FitcamX 4K Dash Cam for Cadillac CT4 - basically the GOAT for looking stock. It swaps out your mirror shroud so there's literally NO wires. The 4K is decent, tho maybe not as crisp as a high-end dedicated unit.

2. BlackVue DR970X-2CH 4K Plus with 256GB microSD - If you want the BEST parking mode, this is it. It's super slim, but you'll have to tuck the wires into the headliner.

I'm so satisfied with the FitcamX just cuz it looks like it came from the factory... totally worth it if you hate clutter!! gl!

Ok so, I went through this last year when I first got my CT4, and honestly, I was STRESSED about the small windshield space too. I've tried many setups over the years, and I really wanted that clean, integrated look without spending $600+ on a high-end installer.

In my experience, I found that going with the FitcamX 4K Dash Cam for Cadillac CT4/CT5 was the best value play. It basically replaces the trim piece behind the mirror, so it looks totally OEM. I did the install myself in about 20 minutes; the trick is using a plastic pry tool so you dont scratch the housing. For the memory, I skipped the cheap card it came with and grabbed a Samsung PRO Endurance 128GB microSDXC Memory Card because standard cards literally fry in the summer heat. Total cost was under $200, which is WAY better than the BlackVue prices. The 4K quality is sharp enough to catch plates, tho the app is kinda basic... it gets the job done for the price though! gl!

For your situation, I'd definitely lean toward the tech side of things. I've messed with a few setups and found that wiring into the rear-view mirror's power source is basically the only way to keep it clean.

Here's what I've learned:
- Use a 12V to 5V hardware kit to avoid dangling cables.
- Look for a super capacitor model; they handle heat way better than batteries.
- High-bitrate 4K is a MUST for reading plates.

I honestly prefer a wedge-shaped unit since it sits flush against the glass. It lowkey looks OEM if you mount it right behind the dot matrix. It's a bit of a project but totally worth it! peace

Pro tip: honestly, i'd check out the DashcamTalk forums for some real-world reliability tests. Since ur in a CT4, you gotta be CAREFUL about battery drain during parking mode. I always tell people to go with Vantrue or Thinkware for their safety cut-offs... basically anything from those brands is solid for protecting ur electrical system. Just make sure to get a professional to look at the fuse box so u dont void that Cadillac warranty, stay safe!!

yo, congrats on the new CT4!! honestly, i get the struggle with that small windshield... i spent weeks doing market research cuz i didnt want some bulky eye-sore blocking my view. while others mentioned the high-end brands, i looked at the value side and found some solid alternatives that wont break the bank but still give you that 4K crispness.

Here's what I recommend after looking at the specs:

* **Best Value 4K:** I've been realy satisfied with the VIOFO A229 Pro 4K Dash Cam. It uses a top-tier Sony Starvis 2 sensor so the night footage is actually insane for the price.
* **Budget 4K Option:** The 70mai Dash Cam A810 4K HDR is super compact and way cheaper than BlackVue, tho the parking mode kit is a separate buy.
* **Ultra Discrete:** If you can sacrifice 4K for size, the Garmin Dash Cam Mini 2 is basically invisible, but yeah, it's only 1080p.

I mean, if you want that totally hidden look, FitcamX 4K Dash Cam for Cadillac is the way to go, but the VIOFO gives you better image quality imo. Just make sure you get a hardwire kit for that parking mode peace of mind. gl!! 👍