New Head Unit in S13 with Active Speakers Questions

[high flya]

I'm trying to wire in my new head unit using a wiring adapter with help from a web guide. It said,

"I recommend connecting the new unit’s speaker outputs into the existingamplifier inputs, instead of direct to the speakers. The existing amplifiers have electronic equalization that enhances bass and treble response, and sounds better than running the speakers directly from the new unit."

1. So does that mean I should splice all the speaker output wires (4+ 4-) from the head unit to the adapter's amp wires (1+ 1-)?

2. Should I connect the ground from the head unit directly to the car, or should I splice it to the ground from the adapter?

[the converted]

Just bypass the stock amps. There should be a link in the sticky at the top of the forum.