Q: Ford Solenoid Switch in Lieu of Mopar Starter Relay?

The Ford relay will not allow you have the Mopar Neutral Safety switch system in circuit and operating properly.

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^^THIS^^ There is a "ferd style" relay with an extra post that was used on some AMC rigs that will fix that. However, there is NO reason to use OTHER than a Mopar starter relay, unless you want to get it hidden. On my new wiring, it will be replaced by a "Bosch" style relay, and this is exactly what the newer Mopar stuff (RAM etc) uses.