Ok, I think that switch has 2 contacts. 1 Normally closed that when you push the clutch it disengages the cruise. The second set of contacts is normally open that closes when you push the clutch to apply ground to relay.
The 7.5 amp fuse might only get power when you have the key in start position.
Try this: Disconnect plug from clutch switch. Get a piece of wire and go from the black wire to 1 of the pink wires and try to start. If no luck try from black to other pink wire and try to start. Hopefully one will start it.
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