The black wire is the ignition power on from the key switch. It powered
the coil and the ECU relay on the 2.1.

The blue wire is the alternator charging indicator wire to the dash LED.

Mark

Bruce Nadig wrote:

> Howdy All,
>
> Emergency question here. Working on wiring in the engine compartment
> of my
> '87 GL.
>
> I'm doing an engine conversion and I need to get some wires sorted out
> ASAP.
>
> If you open the joint box cover, you will find several large
> "conduits" with
> multiple wires coming out. Where they enter the joint box there is a
> sort of
> "D" shaped grommet. There are many wires that come out of this
> conduit. Most
> of them go to a white round connector. However, there are two other wires
> that we can't figure out what they do. They come out of this same
> sheathing
> as the wires going to the round connectors.
>
> There are two wires in question. One is blue and has a yellow female
> connector. Anyone know what this wire does, or where it is connected at
> either end?
>
> The other wire in question comes from the came conduit. It is black
> and also
> has a yellow female connector on it. Any idea what this wire does, or
> where
> it is connected at either end?
>
> Any and all help will be greatly appreciated.
>
> I have pictures of the joint box that I can e-mail if you need to see
> what I
> am talking about.
>
> Help! Please!
>
> Cheers,
> Bruce
> motorbruce
> motorbruce@hotmail.com
>