1986 Ford Crown Victoria Won't Start - Ignition System

Question: Nothing happens when key is turned. Faint hum for a few seconds from right side under or behind dash. Replaced solenoid, no change. Starts easily and runs fine when I jump the solenoid.

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Technican: Start by double checking connections at battery, solenoid, grounds, etc. Do you get the normal dash lights when you first turn the key?

Owner: All connections appear right, as far as I can tell. Dash lights read normally. I Can hear the feul pump activate at the gas tank, and the 3 relays at the front drivers side of the engine compartment click when the key is turned, as well as a little unit just behind the throttle body. Could it be a fuse?

Technican: A fuse is possible. Have you tried starting the engine by shifting into neutral instead of park? This is an attempt to check the Park Neutral safety switch.

Owner: I have tried it in nuetral, same result. It starts fine in nuetral or park by jumping the solenoid, so I am thinking it's not the nuetral safety switch. But does jumping the solenoid bypass it? The fuses in the fusebox are all good. Are there fusible links?

Technican: Jumping the solenoid does effectively bypass the switch. I'll check to see if I can find instructions you can follow for testing the starting system.

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