Sean, I hope I haven't misread your post....... The ignition switch is under the 2 piece steering column attached to the key cylinder...... The starter solenoid is usually mounted on the metal inner fenders under the hood close to the battery. Check the connectors and the cables for corrosion follow the cables to the solenoid ; check the connectors and the 2 screws/bolts that secure the solenoid to the fender(that's where the solenoid gets its ground!)the cabling from the solenoid to the starter and the starter itself, check all the grounding straps that go from frame to engine, when dealing with 12VDC/negative ground (s) the condition of the connectors and the cables should not be taken lightly,
I hope this was of some use.
90 LX 2.3 N/A 5spd
suspension upgrades in progress