How's the amp meter hooked up? That is, is it hooked in with really big wires that might be taking all the current for everything in the car? Do you voltage at both sides? I have trouble thinking of any single wire that would carry everything including the lights, but an aftermarket amp meter... yea, maybe. That or a connection at the battery...either side.

As for the turn signals.. well, first I guess you'd have to get power to it again. That said though, when you did your original post with pictures, the two switches looked similar enough to me. I'd try hooking them up and see. In that picture that was posted, it sure looked to me like two of spade connectors were directly linked.

Good luck with it... monkeyed electricals can be a real pain.. as you know.

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-Matt I ♥ my ♂