Hey all, this may be well known but a search for “Blackout mode” and “shut off speedometer lights” turned up nothing.
To the point: Grounding Pin 12 in the cluster turns off all the speedometer lights.
Long: While reading the schematic / troubleshooting for the speedometer I saw that Pin 12 showed “Blackout Mode”. When I searched it only came up in threads about the Military RZRs, which have an I.R. option, so it only made sense that it killed some / all the lights. And, since I also read that if the speedometer didn’t work then “blackout mode” could be switched on, it seemed like a simple mod to try.
Since the bright blue lights bother my eyes at night I decided to see what would happened if I grounded that pin. The speedometer lights shut off and everything else on the RZR stayed lit. Success!
The pins you need are Delphi part#12084912. (Search ebay, Mouser, or go to your local GM dealership and tell them you need some terminals from “Delphi Tray 5”.)
Hope this helps someone else!