Holley 556-172 12-1x Modular Crank Trigger Kit Instruction Manual
The 556-172 12-1x Modular Crank Trigger Kit user manual provides detailed instructions for Small Block Ford applications equipped with a standard, aftermarket ATI Super Damper or Fluidampr style harmonic balancer. The kit includes a bracket, mounting hardware, and hall-effect sensor necessary for installation. Ensure proper installation to avoid poor performance, vehicle damage, personal injury, or death.