ok watching now.
fdk4b is for the older cars. it would have fit my 93, but not my 96. and apparently not your car as well.
fdk10b is the correct harness. they changed plugs, possibly in 95 when they went to double din radios.
don't need the squarish one either.
the black rectangular one goes with what ford called "non premium sound". so it may fit the early non JBL cars. (as well as my f150.) anyway, you're right, it dont work.
right, fdk10b doesn't have the bypass. they didn't really work. i never got it to work anyway.
i'm also at a loss. best i can come up with would be a way to test the head unit and the amp.
so like, put the stock head unit back in, if you have sound, the amp is good.
and i guess put the other head unit in something else, just to verify it does actually work.
i dunno. everything else looks ok...
nice video quality btw. i love me some 1080p.