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Yes, as long as your blue line just represents the piggy back red wire that runs with your yellow video, that is correct. That red wire that's inside the yellow video wire is just a bridge from the blue CCD 12V wire, to the 'red camera power supply line'.
The extra 'Reverse' labeled wire from your head unit is most likely for manual cars who need to tap into the reverse light blue/black wire because on manual cars the CANBUS does not send the gear position signal to the head unit. (I don't know if that's true for all cars, but I'm pretty sure that's how ours work.) Using that wire would be when you would use the 'REVERSE STATE' option in the software so it knows to look for that head unit's reverse wire's signal, instead of expecting it from the CANBUS.
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