I used to count the ticks on my dash clock before I heard the relay click, and it would be about 22 ticks after the buzzing in the car stopped (couldn't hear the clock over the buzzing), so probably around 30 seconds total. This was in an 81 300TD. I used to have to cycle 3 times in cold weather (below 20 F) on that car before it would be willing to start.

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