Suburban SF20 F heater wiring question

[Welwood]

I took heater (Suburban sf20 f) out to clean dirt dobbers and took picture of wiring, but lost it. 😞 Heater has 4 wires coming from it,
power, ground, and two blue wires. Trying to figure out where
they connect. From the camper power & ground and bundled 3 wires
from thermostat. where do the blue wires from the unit hook up?
TIA

[enblethen]

Look on page 21. Blues are to thermostat
Bryant RV