2006 Rocket roadster - so he means a 'Standard dual headlight 3 pipe Rocket III' I imagine, Roadsters are all the later version with ABS 2010 on or 2011 in USA.
Yep that is the early version I have fitted. The later versions became much smaller, neater and more waterproof each time.
I think version #4 was last. They all work great just improvements over time to packaging etc as later electronic components became available. As we know he is a topline electrical design engineer and liked to keep things up to date tech wise.
DeCosse would have used the correct plug connectors for each order to match their bike:
Analogue 2004-2005 Rocket III Standards,
Analogue 2006-2009 Rocket III Standards and Classics
2010- CANBUS ABS Rocket III Roadsters