what color vac line goes to the fuel regulator???

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Green goes to the EGR valve itself.

The FPR should have a blk/blue hose.

The important things are that:
For the EGR, you have manifold vac to the EGR solenoid. Then a line from the solenoid to the EGR valve itself.

On the FPR, it receives straight manifold vac. A tiny little jumper hose from the intake to the FPR is all that's needed.

Good luck.