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Message: <blockquote data-quote="xs man 27" data-source="post: 1246729" data-attributes="member: 17361"><p>I finally was able to finish what I started yesterday and update being I got all lines through the firewall and to the a pillar and than finally today I was able to wire the two gauges together and I used a add a circuit fuse and truth be told,, the lights for the gauges lit up and the temp gauge moved to a lil over 100 degrees and the vacuum gauge I have worked all along..  question I have about the vacuum gauge whats a good number the gauge should read at ?  and I was totally unaware that when I give the engine a rev the gauge reads down and to zero..  hate to sound stupid but the number I should be at ? stock 302 with fresh hci swap ...   reason I have a vacuum gauge was to make a long story short buddy owes me money and had this sitting for over a year n seemed like an easy install n fact they were free..  but again any help would be great...  since I got my first mustang this car being it I finally was able to do something to the car myself and its a great feeling doing everything yourself...   vacuum gauge is the only thing I m unsure about..  previous owner already had the vacuum line cut and had a tube connecting already,, I just unplugged it got a T fitting to fit and it works but I m not sure if how the previous owner did is affecting my readying....   thanks</p></blockquote><p></p>