Hi JvE
1. I only use WING lights to check for ice or when it's foggy. (They can be quite blinding to other a/c on the ground
).The RWY TURN OFF lights I only use during TO & Ldg. I normally only use TAXI when maneuvering round the airfield. Some of my colleagues use both TAXI & T/OFF lights whilst taxiing. It's pretty much up to the individual in my company...
2. TCAS to XPDR before push-back then TA/RA whilst taxiing out for TO. Set to ABV with SYS1 = my sector, SYS2 = co-pilot's sector. Reaching cruise set to BLW (I never really use Normal). After landing set to XPDR again for the taxi-in. Squawk 2000 (UK destinations) or 1000 (Other destinations) before switching OFF. TA mode only used after, say, an engine failure or where specifically mentioned in the airfield Perfomance Manual et al to prevent nuisance warnings on parallel approaches etc.
Other companies may have different policies...
id