In another forum, they said that it would be safer if you get the energy from the red cable behind the unit, not from the fuse. Once the vehicle is locked, its power is cut off.
One of the many problems with advice on forums (this forum included) is that every one has an opinion on stuff regardless of their technical understanding of the underlying theory! Or said another way, forum opinions often are NOT restricted by actual facts!!
The "red cable" in your picture is the power supply for the MIB. Connecting the camera to the point shown in your picture is electrically the same as connecting to
SC12. As I said in my previous post
"On the OEM Golf mk7/mk7.5 "C" fuse-block, ALL fuses from position 1 to position 31 are T30.". So, the advice from "another forum" is just another T30 supply.
I assume that the advice from "another forum" was provided for ease of wiring, rather than for electrical reasons. However, connecting to the "red cable" has an electrical down-side. Notice the size of the "red cable" compared to the size of the camera power-supply wire. Wire size is chosen based on the amount of electrical current (i.e. amperes) that the down-stream device will draw from the battery. The fuse size for
SC12 is
20 Amps whereas the fuse size for the OEM camera on the factory position
SC18 is
7.5 Amps.
The primary purpose of a fuse is to protect the down-stream equipment. If the camera is connected to the "red cable" and the camera develops a fault - the fault-energy that will flow into the camera will be
260% higher than if the camera was connected to the factory 7.5 Amp fuse! This ain't good for the camera and/or the camera wiring!!
So, it's totally your decision (doesn't matter to me)- it might well be physically easier to connect the camera supply wire to the "red cable", However, there is an electrical cost for taking the easy route - the risk is entirely yours!!!!
Having constant power in the camera reduces the life of the camera. do you think this is true?
If this was an OEM camera - this hypothesis is absolute rubbish!!
However, I know nothing about the quality of this after-market camera. That said, I very much doubt that if this camera has poor build quality, connecting to a T30 supply would make any difference to the longevity of the camera!