2-channel Dashcam installing

I installed the previous car's dashcam without a problem because its only one cam.

But this time, I bought 2 channels which means a rear cam also. 

 

70mai New 4K Dash Cam A810 with Starvis 2 IMX678,Dual HDR Front and Rear Cam,Built in GPS,Night Owl Vision,Support 256GB Max,

At first, I thought I could use my old Micro SD what I have. But all 3 different, don't work. 

I ordered a new 265 GB and we got an accident that day. 

That was so minor it didn't even need a claim..but my heart was pounding..I should..

 

I squeezed in cables but it was hard to attach to the trunk door. 

I need some guidance on that gap between doors which needs to take out the plastic cover but it doesn't show any places. 

After seeing many videos and blogs, I tried. It was not as hard as I expected to pull out the plastic cover. But it's quite hard to put through the curved rubber connector even with a cloth hanger. I did without a cloth hanger actually because the end of the connector has some hard tip which not easily bend. 

 

 

 

---------from i searched internet..

 

 

 

 

 

 

 

 

https://blog.naver.com/kbdzzang1/221412003719

2채널 블랙박스 설치방법과 설치비용알아보기

 

 

https://blog.naver.com/motosafe/221967673376

코나 2채널 블랙박스 장착방법