my wiper motor gets hot ?

Take pitman arm off motor and run it. If the problem persists the problem is in the motor/gearbox. If the problem goes away the resistance problem is in the pivot posts. It can't just toss the plastic ball socket bushings from linkage like later models do. It doesn't have those.
Our first 67 had the cycling circuit breaker inside the switch. It eventually failed (bi metal strip cracked in half). I figured out how to mount a substitute on outside of the switch. The red 67 we have today was going to do the same if I din't fix it. Fault was in the drivers side pivot post mostly on both cars. There was a little wear in the right pivot post but not so much binding. Drop it, rotate housing 180 degrees gets the pressure on a less worn side of the bushings.
To take one of these pivots apart, new bushing and good shaft taken from a right pivot to replace a severely worn shaft in left pivot was a challenge. Friend with a milling machine helped.