Starter Issue, Starter does not respond to ignition switch Options

[downrange]

Restoring 1974 914 1.8 liter L Jetronic. No starter response to ignition switch. Replaced original starter - no luck. Installed Bosch Starter Relay Hot Start Kit - No luck. Cleaned ground connections to transmission ground strap - no luck. Any suggestions?

If not obvious, I am like a monkey with a iPhone when it comes to auto electronics.

[downrange]

Is there a way to test the starter switch without pulling it out of the steering column?

[jcd914]

Is there a way to test the starter switch without pulling it out of the steering column?

Get a voltmeter or a test light and connect it to the yellow wire under the passenger seat where the seatbelt interlock used to be. Then when you try to crank the engine with the key you should see 12 volts at the yellow wire.
If you have 12 volts there you can also do this same test through the rest of the starter circuit.
Go to the yellow wire coming in to the engine compartment relay panel, pin 1 on the 14 pin connector.
Then next is the yellow wire exiting the relay panel, pin 6 on the 12 pin connector.
The the last check is the yellow wire at the starter.

If the switch is bad you won't see voltage at the first test point under the seat.
Jim