Mercury 7.5 Outboard question.

Hey,

My merc outboard, 1985, I think has some corrosion on the wires, and I'm going to tackle some of this myself......I think.

A couple questions.......

WHAT are these:

[url]http://smalloutboards.com/images/m7579xdec07/insideback.jpg[/url]

The box with CDI on it says switchbox.......I'm thinking ignition stuff.

What about the Orange block below the Left Plug Wire.

I'm having a HARD time finding this out, and also wondering if it is even worth fixing........

MOST all the wiring in this area on my motor is jacked up.

BTW...........the pic above is NOT mine, but it looks exactly the same.

Thanks,

Geo