Don't really know where these hoses go to? (I took of emissions & deleted cold start)

Does this hose connect from #1 to #2 or do I cap off #2 (I took off emissions and the anything affiliated with the cold start and rats nest)

This hose has nowhere to go, I completely don't know where it goes? (numbered 3-4)

This hose is coming off the lower radiator hose, where do it go?

 

Hose #3 is the return from the heater core.

 

the one on the radiator goes to the other heater core hard line.

the other hose from the water pump i believe goes to the BAC valve.

 

thank you, I took off the BAC so all I need to do is cap it off.