Sentrek amp
That company went out of business some years ago, so it's difficult to find the specs or pictures of it to be super accurate, but generally speaking it should have a "Battery", "Remote", and "Ground" set of terminals and a pair of spaker terminals each with a positive and negative. The battery terminal goes to the battery, the remote terminal goes to the remote output lead (usually blue/white) on the head unit, and the ground terminal goes to the chassis of the car. The speaker terminals go to the speakers (observe positive and negatives).
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