Vey wrote:
I have this old car amp that I don't know much about.
It is a Motorola PA-4000.
I want to hook it up and see if it will work without frying it.

There are two groups of wire, One group is Red, Blue & Black.

The other group is Long Black with an inline fuse, Medium length Black,
Two short Blacks, short Orange and a short Yellow.

On the side, there is a sticker that says "Speaker connections, Left
Channel Yellow Black, Right Channel Orange Black. See Owners Manual."

Typically, I would hook the red to + and the black from the first group
to Black, but what about the blue wire?

And why is the fuse on what looks like a ground wire?


It's probably already fried, otherwise wouldn't it be being used?