Bob, the code resistor is between b1 and b2 and is placed on the circuit board of the head. Values are 22k for 1600J, 39k for 3200J and 47k for 6400J. This information is not used on recent packs anymore, just if there is a connection, I´d probably go with 39k. Pulso8 pack has a different trigger pinout anyway. If you converted the boxlite from Elinchrom to broncolor make sure the trigger circuit is connected back to PE inside the head. To work with Elinchrom it was probably connected to the negative pin of the flashtube. There is no trigger capacitor inside the head for broncolor, unfortunately I am not sure for Elinchrom. While similar Elinchrom and broncolor don´t share exactly the same pinout for the connector. Cheers, Ulf