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Magnetic Starter Relay M.I.A.

fpchief

Well-known member
1,041
220
63
Location
South Alabama
My other deuce has it but my '71 M109 doesn't have the starter relay on the side of the block above the starter. Is the starter solenoid filling that capacity? I did notice that the #10 wire I repaired when troubleshooting no power to main switch is coming from the starter solenoid on this one...(I think)



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Jeepsinker

Well-known member
5,399
456
83
Location
Dry Creek, Louisiana
Not all trucks had them not sure why. I had surmised at one time that one type of starter solenoid drew less amperage than another, but I have no data to support that other than noting that all the trucks without a solenoid have had the bell shaped solenoid, where all the cylindrical solenoid equipped trucks I've seen except one have had the magnetic relay.

Anymore though, I honestly don't think it is required at all. I think they were a safety feature meant to keep soldiers from welding contacts in starter solenoids by cranking with a low battery pair, but I haven't really thought that through either.
 
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