Need help from Toro owners! Fig. 1EA-7 in the 66 Olds Service Manual shows what appears to be an external relay and circuit breaker assembly for the air conditioning. It is not obvious to me where this assembly is located in the car. Does anyone know? And the same figure shows the circuit breaker apparently grounded to something I don't recognize. Can you tell me what that doohickey is?

Thanks in advance!