hmm.......... so you connected the camera trigger wire to the
left-side reverse light? Normally the turn-ON signal for the camera is the
right-side reverse light. I don't believe that it matters which side is used for this function.
OK - so here's the thing about voltage supplies on cars - there are basically 2 x types of these voltages which have been industry standardized by the terms "T30" and "T15" by DIN72552
T30 = "hard" battery voltage which is present regardless of the status of the ignition switch
T15 = "switched" battery voltage which is present ONLY when the ignition switch is ON
On the factory wiring, the camera is wired to a T30 voltage. I assume that your connection on the Quadlock was on pin#18 (bottom left-side) in my picture above. If so, this is also a T30 voltage -so the connection should be OK electrically.
I guess the only draw-back with the Quadlock connection is where you physically place the new fuse housing (in case you need to change the fuse later).
But you can really use any T30 fuse position on the fuse-board in your picture as an alternative by plugging-in an add-on-fuse (see you-tube videos). Simply turn-off the ignition switch and test which fuse positions are @ battery volts:
Don