re: harness - $600 for parts and labor ain't bad...
btw, some of mid 90's cars don't have a fuel accumulator - mine doesn't. i had similar hard starting problems recently which all went away when i replaced old fuses. they may look ok but they crack and cause intermittent connectivity problems which are hard to diagnose so change all of them...
1993 300e-2.8 - gone now <sigh>
"Do not adjust your mind, it's reality that's malfunctioning"