Hi @dreed10 ,
Correction** @David_1528 has provided valuable insight. Please see updated response:
Thank you for your reply. Pins 1 & 12 are the S or “Set” coil, where pins 6 & 7 are the R or “Reset” coil. Both coils do require the shown polarity in order to energize but are not meant to be powered at the same time. The schematic diagram in the datasheet, like other latching relay schematics are always shown in the Reset state, if you were to apply a pulse voltage to the Set coil, then pin 4 would connect to pin 5, and pin 9 would connect to pin 8. The relay will latch in this state until the appropriate pulse voltage is applied to the Reset coil, in which pin 4 would connect to pin 3, and pin 9 would connect to pin 10 and would remain latched until it were to be “Set” again.
Latching relays are almost always shipped in the reset state also, but this cannot be guaranteed. Shock and impacts to the relay during shipping or installation may cause it to change its contact state.
See also: Initial state of Latching Relay is changed before use