Hello I am having trouble trying to figure out which hoses I need to bypass, if possible from hood. I believe the bottom two hoses with the tab clamps are supposed to be the heater core hoses. I just am having trouble finding information on which hoses I need to bypass. I took it to the auto shop they said I have a leak somewhere along the aluminum lining leading to the rear heater core. Like I said I just want to see if its possible to bypass the rear heater core from the hood. Ill attach some pictures for you to look at.

 

the two on the top secured with nuts are ac lines. the 2 with clips are heater lines.

i don't think you can bypass it at the firewall as it will effect the front system. probably best to trace the line from underneath the vehicle.

 

Yeah I realized today those lines more than likely lead straight into the heater core. I followed two aluminum lines that followed from the reservoir and radiator to the rear heater core. They were rubber lines then turned into aluminum (or other metal) as it went below my vehicle. Ill post a picture of the lines tomorrow to show.