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GOOACC 6 Pack Automotive Relay Harness Set 5-Pin 30/40A 12V SPDT with Interlocking Relay Socket and Harnesses,2 Years Warranty
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https://www.amazon.com/stores/GOOACC...4-661ABB90BF03
The problem is the safety circuit creates a voltage drop and you will get less than 12 volts to your starter solenoid. These starters don't like anything less than 12 volts on the solenoid. The fix is putting one of these relays in that require something like 8-12 volts to pull in.