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					Originally Posted by Nick  You are probably referring to the Hydro boost unit. It is from an Astro van. 
 Cheers
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 Nick, its not the hydroboost.  Its in post #3- top row of pictures, the middle one.  It looks like it has a red wire next to it?  The outer most part of the firewall (on driver's side).  It would be hidden when the fender is installed.  Just curious.  Thanks!