Car S4 Turbo II:

Im reinstalling my BAC and couldnt figure out where the coolant lines go.

First off the waterpump feeds the coolant to the BAC right? So I connect a hose from the waterpump to the BAC tube. I connect the thick looking metal tube to to the waterpump and thats how it feed it correct?

Then what im wondering is where do the other two metal tubes go. The ones that are connected together on the BAC that look like a straight line? I think one goes to the throttle body and where does the other one go?

Since my car has no BAC right, in order to circulate the rear rotors with coolant I ran a stright hose from the waterpump to the rear iron. So how would I go about giving it coolant now? Does the other metal tube go to the rear iron or to thermowax.

In simplier form thick metal tube gets fed coolant from waterpump. The metal lines that are connected. One of them goes to the throttle body and confused on where the other end goes.

 

Coolant flows from the nipple on the rear iron to the bottom of the thermowax, through the thermowax and TB, from the top of the TB to the rear of the BAC valve, and from the front of the BAC valve to the rear of the water pump.