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Holley 534-56
Closed Loop Wiring Harness
  • Digital 2-bbl Pro-Jection System
    • Accessories & Replacement Components
    Item# 510-534-56
    Only $19.99
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    Holley 534-25-1
    Wiring Harness
  • For 1 & 2-Barrel Pro-Jection Systems
    • Wiring Components
    Item# 510-534-25-1
    Ships 06/26/13
    Only $136.99
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    Holley 534-47
    GM Distributor Wiring Harness Adapter
  • Allows Connection to GM Distributor for Ignition Control Feature; 4Di Only
  • Holley ECU to GM Distributor
    • Wiring Accessories
    Item# 510-534-47
    Ships 06/26/13
    Only $36.99
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    Holley 534-45
    DB9 Computer Cable
  • For all Pro-Jection Di Systems
  • Allows Hookup For Tuning
    • Wiring Components
    Item# 510-534-45
    Ships 06/26/13
    Only $29.99
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    Holley 534-23
    Wiring Harness Adapter
  • For All Analog 2-Barrel Pro-Jection Systems W/ Old ECU & Ribbed/Finned Housings
  • Adapter Allows Connection To Newer Analog/Digital ECU
    • Wiring Components
    Item# 510-534-23
    Ships 06/26/13
    Only $51.99
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    Holley 534-196
    Throttle Body Wiring Harness
  • For Commander 950 w/Two 4 bbl Throttle Bodies
    • Wiring Accessories
    Item# 510-534-196
    Ships 06/26/13
    Only $86.99
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