Are you coming to Haemish's party tonight? If so I'll bring you something that might help with Black Wow.
FYI I've only used it once, some time ago, and I don't buy into the whole "use a pea size drop for a large section" because molecular structure can only break down and spread out so far; eventually you're just rubbing plastic with a dry cloth.
I'd say, either do the black trim before washing, then wash everything - including the trim. Or, wash the trim with general purpose cleaner, wash and wax, then treat the trim. But tape off so the excess doesn't get onto the paint. The vinyl trim cleaners I have used have always been pretty messy and slick.
-Jim