Those coils/pickups are custom made specifically for that motor. They are not "off the shelf" parts. Only way to replace them would be to remove ones from another RS1500 motor. That would be a lot of work. Easier just to replace the entire motor, of course. Sometimes eBay has them for sale.. Or if no motors available, buy a "parts" RS1500 deck and swap motors.
Also possible one could splice new extender wires on to the broken ones. Or, if the ends of the broken wires are not accessible (are they?), one could remove the wire entirely from the coil form and install/wind all new wire. New wire would need to be the exact same gauge as the old and the resistance would need to be close to the original coil (9.6 ohms).
