Engine won't crank due to starter relay failure on Nissan 240SX

Problem Description and Possible Solution
The engine may not crank when the key is turned to "start" if the starter relay fails. This can be confused with a defective starter motor.
Problem Data
RepairPal Verified
Average mileage: 216,500 (192,000–241,000)
3 model years affected: 1990, 1991, 1993
7 people reported this problem
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Everything powers on, but when key is turned to start, power dies and nothing happens, no clicks, no noise, nothing.
Intermittent no crank problem. Sometimes I will go to years without a problem. And then once in a while on my car wouldn't start at all. after some digging I realize it was the starter circuit. Now when the problem happens, I switch the key to the ON position, and I then use a screwdriver to connect the thick positive post to the relay input pin on the starter.