Thats common, what matters is when 12 volts is applied to one of the small S activation terminals (and if theres a good ground) the relay closes AND BOTH THE BIG POSTS ARE CONNECTED TOGETHER so the battery is in contact with the starter motor. Its a normally open two terminal relay and once closed the 2 big posts are together so battery current gets to the starter motor. Its never going to close and activate until 12 volts is applied to one of the small S activation terminals and theres a good ground connection.
DISCLAIMER Im talking about Ford type starter solenoids here if you have something different this may or may not be true
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Today's Featured Article - Recollections of a John Deere GP - by Charlie Cook. I grew up on my dad's 280 acre general farm in Western Michigan. Dad's only tractor when I was very young was the old GP. My first recollection of this tractor was when dad allowed my brother and myself to ride on the tractor with him driving. One of us would sit on the left fender (away from the clutch) and other would sit on the gas tank and hold onto the crankcase breather pipe.
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