diesel911 so do i check the voltage of the relay on those bolts.
or do i check them individually using the engine as ground?

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Mathilda
1982 300D Turbo

Yes, Positive Probe on the Wire/Nut on the Relay or Fuse and negative Probe to Ground. It should show Battery Voltage even with the Ignition Key off.

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84 300D, 82 Volvo 244Gl Diesel

12v with engine off at both bolts at preglow relay timer.
i never hear the relay click at all now...waiting 45secs

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Mathilda
1982 300D Turbo

Your glow plugs won't turn off...and you are checking to see if the relay is getting power?

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