64 Dart cluster connector

The instrument limiter/ regulator is INSIDE the fuel gauge if it has 3 studs

https://www.rt-eng.com/rte/index.php/Main_Page
Here, concerning the "in the fuel guage" limiters

https://rt-eng.com/index.php/RTE_Gauge_Faq.html#Fixing_dash_clusters_that_have_internal_limiters