Which connection is input hot water and which is output cold water from inside car console heater?

The top hose is normally always the inlet. Two reasons this is the case. First the hot coolant will flow down through the heater core and return out the bottom. They use gravity as a assist rather then trying to pump it up hill. Second you can see the hose on the top is wrapped. This is insulation that they place on it to keep the coolant as hot as possible as it goes into the heater core. Once the coolant comes out, it no longer needs to be insulated.

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You are welcome. That is good to know however, sometimes those things don't really matter if you are hooking to only one of the heater core lines. The reason is, both lines are about the same temp so they normally just pick the easiest to get to.

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Oh. I am sorry. I am not familiar with that model then. The ones I have seen they just need to know the direction of the fluid and route that as the inlet to the pump and the outlet from the pump goes back into the system. I put a drawing of what I have seen. Thanks for the info about this one. Thanks

I am not sure I am following just because I am not looking at it when you are describing it. I attached a coolant flow diagram below that should help.

Worst case scenario what I would do is take both lines off and put connect a line to them so you can route them to a bucket. Start the vehicle for a couple seconds and the one with coolant coming out is the inlet and no coolant is the return.