Depends on how you define receiving power.

12V is available virtually directly from the battery to the single large terminal in the glow plug relay, even with the key off. This is routed to the Normally Open contacts of the relay and will go to the glow plugs when the relay is energized. When the key is turned to the RUN position, the relay is energized. Once the key is moved to (returned from?) the START position, the relay is de-energized.

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mjk

'84 300SD 119KMi (Liesl der Diesel)
'84 300D 326KMi when the oil left (former parts car)
'82 300SD 253KMi (new parts car)