Does anyone know where I can find an EGR vacuum harness for a 1986 corvette?
This has a a connector with 2 outlet hoses that mount near the front of the engine.  I would also like to know the connecting points for the other ends. One is under the plenum,but I can't locate the other.  
Thank you  

That's a tough one. Aside from maybe Corvette Central or Eckler's, probably the only other place to find that is form a salvage Corvette. You might try eBay also.

If I can coem up with answers to your other tech questions, I'll post them to the board.  

Thanks for the info.  one was offered on ebay, but for an 87 and carried a different part#.  I have been able to remove the broken ends from the connector, and think I can replace the hose and seal with some silicone.  Only thing is locating the other connection.