egr vac. solenoid hose routing?

[Swims350]

Ok guys I got an 88 k1500 with a 350 tbi and I was wondering if someone knows which port goes to the egr on the egr solenoid and what the other port goes to?

I tried to keep track of it when i rebuilt the motor but I wanted to make sure. I did have it tied into the bottom port on the solenoid and the top I had plugged off, the front single port went to the tbi front ps and had 2 lines in the elbow, one went to the air pump I think.

I don't have a diagram for it either.

 

[Swims350]

ok from what I was told it's only got 2 vac. lines, the 2nd on the back side up top is a vent and should have a sponge filter on it. So I gotta unhook the vac. plug I had on it and put a filter on it and hook the egr back to it as it was before.