Lucas 128Sa Ignition Switch Wiring Diagram. S.65662 is our part number for replacing lucas 128sa. 1.off 2.aux/alt 3.aux/heater 4.aux/heater/start connection by 6.3mm and 9.5mm spade terminals.
Lucas 128sa 35670 key switch. Hi guys, i am looking at lucas style switches for my wipers and i've tried to upload the wiring diagram but it exceeds the upload limit! When turned to the 2nd position (start) all three terminals are connected together.
