The bolt under the solenoid is in fact your chassis earth/ground connection. Your wire from there to the negative terminal is correct, but should preferably be a heavier guage than the normal wires. The main chassis ground runs with a heavy wire from the negative terminal on the battery to the back of the engine. It is a good idea to make sure that both these earth wires have clean terminals on both sides.
The negative or earth wire from the R/R, OEM black/white should be connected with a connector under the same screw. It will not matter if you have 2 or 3 connectors under the same screw. In actual fact I have used the bolt that holds the ignitor below the solenoid for this and the two bolts that hold the solenoid for the black/white wires going into the loom. If they are all properly cleaned and terminated any connection to that part of the frame should be a "good" earth.
If you have a green wire from th R/R you most likely have a Honda unit installed see here http://www.thegsresources.com/_forum...d.php?t=128558
Just to recap, after this what is not working at this moment?
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