interesting email from scosche. i asked them about ordering, and they said i could get their "MA03b, MA03Rb" from them, etc. so heres what i sent back:
"is the "b" version of those harnesses (ma03b and ma03rb) the ones with speaker wires only? i need the ones with power and illumination wires too, as this will hook up to my stock head unit"
their response:
"B just means it comes in a bag It includes everything you are looking for pwr,spker and ill"
well there ya go. i guess im gonna order mine from vector like planned because its a lot cheaper than ordering directly from scosche. unforunately, vector doesnt seem to carry any 30A fuses like suggested for my mrp-f320 amp, but if i remember correctly, 1st mp3 said a 40A and even a 50A would be fine? cause the amp kit im gonna get comes with a 40A.