that was why I wrote it that way, "wiring going to the amp" made me ask.

Presuming that you will power direct from battery, this is a pretty simple 'tap' of audio out to the speakers - I suppose that the speaker load presented to the factory amp might be changed, and maybe someone has that info, but again, in a car environment, I think the factory amp should handle that variance - just bouncing down the road varies the resistance, heheh.

With no replies or issues since it was written and your previous experience, you're as safe as possible, IMO.. there are several subwoofer topics, but I didn't find anyone specifically pointing to the how-to you posted..

__________________
carpe` cevesi
knf

01 topaz e53 3i 5m 120k mi =
$9.7K + $2.4K when seller says "needs nothing" (131K)

Drew Cary: I love driving stewpid in hella thunderstorms.. I roll stop-signs.. get pulled over, the high-school cop says, "Do you know why I pulled you over?"
I say, "Sure.. do you know why I did it?"

2012 Election: Congress has determined that government beatings of all taxpayers must continue until morale has improved

Gone: '67 Galaxie LTD 2D aqua, 72 Pinto, 76 Elite, e12 track.. long road