I have a rear heater/fan out of a 4runner that I want to put in the back of a pickup for extra heat... there are 2 hoses... in the following picture can you tell me which is the 'in' hose and which is the 'out' ... and if you are really helpful where they would lead on the engine

 

I could be wrong, someone please chime in if so, but I dont think it matters. It just circulates through the heater core, dont think there are any flow valves or oneway's in it.

 

I wouldnt think it would matter either.

 

I second that. It just goes in, heater core absorbs the heat, and the coolant flows out.

 

I don't think it makes a difference, but just connect so the rubber lines go straight from the hard lines to the heater:



And here is where they connect on the engine:
- http://www.4crawler.com/4x4/CheapTri...ne_Pix/14.html

 

Thanks guys... I appreciate the help!

 

i'm the guy who sold it to you lol and yea doesn't matter