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What other RMI can directly replace the King KNI-581?

April 26, 2017directly King replace RMI

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What other RMI can directly replace the King KNI-581?

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The Collins 332C-10 can directly replace the King KNI-581 if a 26 VAC source is available in the aircraft. Both RMIs utilize the same connector 41 pin connector. However, pins D and P between the 2 RMIs differ. D & P are used as spares on the KNI-581. D & P are used for the 26 VAC input on the 332C-10. In addition, pin J is used as a spare on the KNI-581 while it is used for 5-volt lighting on the 332C-10. Please refer to the individual installation manuals for complete details. Most aircraft that utilize an RMI should have a 26 VAC source. In the case that a specific 28 Volt aircraft does not have an AC source, relatively inexpensive DC inverters are available to provide AC.