Trim tag pic.
Going back to the under hood lamp mercury switch thingy.
I removed it, cleaned it, and hit any ground areas with some scotch brite and citrus cleaner, attached the wire to the fusable link and VIOLA! Works great. The assembly manual shows the two different locations for big block vs small block, and it was where it should be.
The fuseable link that comes from the horn relay and ends just in front of the front wheel well is a translucent white ( yellowed with age ) tube that has a small 4 amp (i think 32volt) fuse in it. The black top plunges and twists to be removed, but that top, seems to be missing something that would retain the wire. I managed to pinch the wire around the upper part of the fuse and close the link to get it to work, but it's a little hack for my likes.
Anyone know what that black top might be missing? I could take a picture of it if need be.