It appears the one on the right is for the TCC.
http://www.rockauto.com/en/catalog/chevrolet,1985,k10+pickup,5.0l+305cid+v8,1300105,electrical-switch+&+relay,auto+trans+lock-up+torque+converter+switch,4548
I was walking the junkyard today and thought sure I would find an example for you. All I...