EDIT:
Ok, I found my answer. Apparently I wasn’t holding my mouth right when I searched previously, or poor search terms. Yes, connect both datalogger and gauge to same green output wire.
I’ll be connecting my Spartan 3 v2 to a SCT X4 for datalogging during my remote tuning. The X4 uses a Firewire connector pigtail for aux inputs. The way I understand the S3 instructions I should connect the “Green - High Performance Analog Output” to the input on the pigtail, and the “Black Electronics Ground” to the ground on the pigtail and to chassis ground.
I wasn’t planning to initially, but now considering adding a gauge like Solid AFR to this. Obviously I’d connect it to the same ground point. Would I connect to the same Green output wire as the datalogging device? Are there any parameters that would need to be changed to keep readings accurate?
I’m not sure if the X4 will do anything with it, but if I can wire the brown into an input, the voltage shows heater state correct? It would be something like:
0 = not heating, waiting for trigger
1 = heating in process
2 = heatup complete, and maintaining temperature?
I assume that is what “sensor heater is in closed loop control” means, that is is maintaining operating temperature.