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?