Finally found it--squat, square metal Bosch relay #0332015012 with 5 pins on it--located on my '93 tucked up under the radio, of all places! Had to dissassemble the center console to get to it even though the dealer's computer page showed it generically located up under the dash on the driver's side, which is true for my '88. Same problem as on my '88 the 5th pin was fried--too much heat buildup inside the connector melted the plastic shield. Emery cleaned the connector & tightened it up prior to reassembly.