Getting a tachometer signal out of a diesel or a coil-on-plug engine is awkward because there is no distributor and no single ignition trigger wire to tap. This pickup clips around an injector current wire or a coil pack primary lead and converts the low-voltage, high-current pulse it senses into a clean 12 volt square wave that a tachometer, shift light or rpm-activated accessory can read, with no splicing needed.

MSD 8918 GMR Tachometer Signal Pickup Features:

• Converts a low-voltage, high-current pulse to a stable 12 volt square wave.
• Clamps onto a diesel injector wire for an easy tach installation.
• Also clips to a coil pack primary lead on late-model engines.
• Drives a tachometer, shift light or rpm-activated accessory.
• Operates on a 5 to 24 volt input for universal use.
• No wire splicing or cutting required.