Results 1 to 5 of 5
  1. #1
    Join Date
    Jul 2017
    Location
    Nashville, TN
    Posts
    57

    GMPP Connect and Cruise Vintage Air AC wiring question

    Working on a 1978 Firebird LS3 project with the GMPP harness. I have the Vintage Air setup along with trinity switch I am putting in with an r4 compressor. I got the compressor as part of a kit a guy used for mounting but never ran. The guy I bought it from seems to have wired a capacitor between the two wires in the AC connector as pictured. Is there a reason for this? Should I be keeping this in conjunction with the trinity switch or should I ditch it. Any help is always appreciated. Name:  A89D9494-8440-42F8-BDA0-0BC3D5382FFA.jpg
Views: 125
Size:  86.2 KB

  2. #2
    Join Date
    Nov 2011
    Location
    Wylie, Texas
    Posts
    165
    Country Flag: United States
    That's not a capacitor it's a diode. Most likely it was placed there to protect against back EMF generated from a motor. So I assume that connector goes to a motor??

  3. #3
    Join Date
    Jul 2017
    Location
    Nashville, TN
    Posts
    57
    Connector goes to the AC compressor

  4. #4
    Join Date
    Nov 2006
    Location
    Mountain Springs, Texas
    Posts
    3,059
    Country Flag: United States
    Looks like he was trying to suppress inductive spikes generated by the clutch. No harm leaving it there imho...

    Don
    1969 Camaro - LSA 6L90E AME sub/IRS
    1957 Buick Caballero - huge project
    1959 El Camino - Ironworks frame
    1969 Mustang Sportsroof
    1956 Cameo - full C5 suspension/drivetrain

  5. #5
    Join Date
    Jul 2017
    Location
    Nashville, TN
    Posts
    57
    Quote Originally Posted by dhutton View Post
    Looks like he was trying to suppress inductive spikes generated by the clutch. No harm leaving it there imho...

    Don
    Awesome, thanks Don!