The connector's not really the problem here but you should give a little thought as to what two component cables you're hooking up. The net run's going to be 24 feet (25's are commercially available) and you just want to be sure that the cable is something like an RG59 type so that your signal losses are reasonable.
Sam: as with most things cables, the effect will depend on:
- How large your display is - How high-frequency the video signals on the cable are
You are NOT likely to see an issue pushing standard component video to a 40" or less RPTV or tube system.
Move up to a HDTV system pushing progressive or HD video and a 50-100" display (projector) - it 'could' create visible issues.
My advice: do a test.
Get a copy of Avia or Video Essentials and look for the fine-focus test pattern (white background with lots of thin, black lines in sun-burst patterns). Get this image up with a single cable and pay attention to how fine the black lines look.
Now hook in the second cable and see if the image changes to a major degree. See if the fine black lines appear fuzzier or develop 'ghosts'.
The problem with 'connecting' 2 cables is this: the video signals want a uniform 75 ohm impedence path. The RCA plugs are usually NOT 75 ohms and barrel-connectors are also never 75 ohms. So you are adding 2 RCA plugs and a un-determined barrel connector to each cable. When a high-frequency signal hits this - it's like a speed-bump. This 'bump' can cause reflections which you notice as a loss-of-focus or a ghost.
If your test does not show any problems - you are good to go.