My son-in-law (800 miles away) has a 510 that won't crank. He says the head lights and dome light works, and volt meter shows 14 volts. Says it ran fine to work, went to leave and won't crank over....no clicking, or anything. First thought was a starter solenoid (or relay?), but when he said the radio didn't work, got thinking along the line of a blown fuse? I know nothing about Datsuns, and hoping you could put me in a good direction. Also, std trans, but clutch switch shouldn't affect the radio. Thanks