[78zenithtv]

Dont touch retaining clips yet!  Just take out the 3 screws holding the unit to chassis and you willl see it lifts right off. the realys on top are connected to the rotary switch under the chassis by basically 2 levers engaging with each other. One has a slot and the other has a tab.  The levers are between the chassis and bottom plate of the relay section on top(if you look between from the side on top you can see them).  Just be careful as the one on chassis side is fiber board. You can remove whole unit without disassembly so you dont throw off parts alignment internal to relay section. See photos