Re: a radom no spark, new TFI and Coil.
I would suggest tracing that white select box to see if it is connected to your ignition in any way, I didn't have that on my 85, but mine was not a convertable, so I'm unaware if it has something to do with the convertable top motor or not. If it is connected to the ignition, I would take it off and set the ignition coil back to stock connections.
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