honestly, whatever you do, DO NOT just tap into a random fuse for parking mode without using a dedicated battery pack first. seriously!! BMWs are basically rolling computers and theyre highkey sensitive to any extra power draw when the engine is off. i've tried many setups over the years and trust me, that "Increased Battery Discharge" warning will haunt your dreams and might even mess with ur start/stop functionality or comfort access. its literally the worst.

for your G20, i think it really depends on what ur willing to spend. in my experience, if you want that super clean look, the FitcamX is actually really cool because it looks factory and the install is basically plug-and-play. it doesnt trigger sensor errors cuz it draws power from the rain sensor. i mean, it’s not perfect, but it’s definitely the most practical for a beginner.

but yeah, if you want serious parking protection without the car complaining, i've found that a BlackVue or Thinkware paired with a separate battery pack is the only "real" way to go. it's way more expensive, but you wont ever have to worry about the car's main battery dying or the dealership blaming ur dash cam for a dead cell. i've seen people use the BMW Advanced Car Eye too just to keep the warranty safe, but everyone says the app is kinda trash tbh... i guess it just depends if you want features or peace of mind. anyway, hope that helps you out a bit!! gl!

Honestly, I had a pretty bad time with the pricey OEM setups, so I totally get the hesitation. If you're on a budget but want that factory look, I'd honestly just grab the FitcamX 4K Dash Cam for BMW G20 3 Series and skip the parking mode hardwire entirely. I tried the fancy setups and still got those annoying battery drain errors, which was sooo frustrating. For a cheaper, reliable fix, just run a SanDisk 128GB High Endurance microSDXC Card and use it for driving only. It saves you hundreds and won't trigger any sensor errors, right?

For your situation, I've spent way too much time obsessing over this for my G20. If you want the cleanest look, FitcamX 4K Dash Cam for BMW G20 is honestly the way to go because it basically replaces the plastic shroud behind the mirror. It looks totally factory, but since it draws power from the rain sensor, it might not give you the long-term parking mode you're after without potentially bugging the car.

If you're reallyyy worried about those battery drain errors (which are a total pain, btw), I would suggest going with the BlackVue DR970X-2CH Plus paired with a BlackVue Power Magic Ultra Battery B-130X. By using a dedicated battery pack, the camera draws zero power from the BMW battery when the engine is off, so the iDrive system stays happy. It's a bit more expensive, but it's the safest way to avoid that 'Increased Battery Discharge' warning while still getting 24/7 protection. Good luck with the new ride! 👍

Honestly, I had issues with the factory options too. For a safety-first approach on the G20, I’d skip the cheap taps and go with the Thinkware U3000 Dual Channel Dash Cam. It uses a Sony Starvis 2 sensor which is super efficient. To avoid that annoying 'Increased Battery Discharge' error, you absolutely gotta pair it with a Thinkware iVOLT BAB-50 External Dash Cam Battery Pack. This setup keeps the camera completely isolated from the BMW's sensitive power management system, so it won't trigger any sensor errors or void ur warranty. It’s a bit pricier, but it’s the only way to get a reliable parking mode without stressing the electronics, right?