Retrofit Indicator kits are designed to work with ND products made on or after February 1, 2017.
Product manufactured prior to February 1, 2017, must be updated with parts or conversion kits to allow the use of Indicator Kits.
ND40/44 functions - Order the 40-600 conversion kit and replace the Inside Spring cage/Lever to accommodate the smaller diameter push-button associated with post-2017 products.
ND50/53/52/55/91/92 inside indicator functions - Order the 40-600 conversion kit and replace the Inside Spring cage/Lever to accommodate the smaller diameter push-button associated with post-2017 products.
ND78/98 functions - No action needed as these are already post-2017 design with upgraded spring cages and levers.
ND75/95 functions - These functions are obsolete and not available for use with the indicator.
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