1997 Johnson/Evinrude EU 25, 35 HP 3-Cylinder outboards Service Manual, Page 276Get this manual
[] 5Connect 12-volt source to the relay "S" terminalsUse an ohmmeter calibrated on high ohms scale or continuity light to test for continuity on relay terminals "B+" and "M" The meter must show continuity[] 6Leave the 12-volt source connected to the "S" terminalsConnect meter leads to relay terminals "B-" and "M" The meter must show no continuity7If your results vary, replace the relay DR3950