Trouble with Ampand 12" sub, need some help!

[95mustanggt]

Answers to a couple questions:

1. Yes there are RCA's from the Deck to the AMP. I just forgot to include them

2. I also forgot the remote wire. The AMP will not power up with out it.

3. The Deck is brand new, I just bought it last night.

4. The AMP's sole purpose in life is to power that sub box.

NEW INFO:

I've connected the sub to my home system, and it works fine, so the Sub is good.

I swaped in the Alpine AMP and Now I can't get anthing out of the SUB?!?! I know the sub is good and this amp was working before?

I've checked all the wiring to the AMP, it's all solid. Ground is good.

I checked the voltage at the amp, and it is the same as battery, 12-12.5V

I tried to check the speaker leads, but there was no power or voltage

Could it be a connection from the amp to the speaker? It is just a section of speaker wire. I checked it over but now it is dark.