4x4Wire - Ignition Switch Replacement I removed these and the one screw in the back that secures the ignition switch body. Finally, I unplugged the 8-conductor connector at the wiring harness. Installation of the new ignition switch goes in reverse order of removal, as does the dash reassembly. Related searches for 1986 toyota ignition switch wiring ignition switch wiringignition switch wiring diagramignition switch wiring harnessignition starter switch wiring diagramtoyota ignition switch replacementboat ignition switch wiring diagramtoyota ignition switch removaltoyota ignition switch problems