Mobile Electronics Certified Professional (MECP) Advanced Practice Test

When considering whether a starter interrupt relay is correctly wired as normally closed with the Key Side on terminal 87 and the Starter Motor Side on terminal 30, it is essential to understand the function and wiring conventions of relays.

A normally closed relay allows current to flow through the load (in this case, the starter motor) when the relay is not energized. However, the configuration described in the question does not allow for this type of operation. In a typical relay setup, the Key Side (in this scenario, terminal 87) should be connected to the source of voltage, while the Starter Motor Side (terminal 30) should connect to the load. For a relay to be functioning as normally closed, when the relay is not powered, it should allow continuity across the contacts.

In the configuration given, with the Key Side on 87 and the Starter Motor Side on 30, it does not provide a path for current to flow to the starter when not energized. This wiring setup does not fulfill the criteria for the relay to be deemed normally closed. Therefore, the statement about the relay being correctly wired as normally closed is not accurate, confirming that the answer is false.