Quick Overview This fully potted, weatherproof module can be wired into the power supply of a coil per cylinder ignition system, where it senses current and creates a conventional 12V square wave signal output which can be utilized by AutoMeter tachometers and many aftermarket RPM activated devices. Ideal for vehicles with late model engine swaps and applications where conventional tachometer signals are not available. Compatible with 1-12 cylinder engines Measures 1.5" x 3.5" x 2" Environmentally sealed and vibration resistant for underhood mounting Wire lengths: Gray (signal out) 52" , Black (ground) 24" , Red & Red/Grn (Ign. Power in and out) 24" Attributes: GTIN: 00046074091179 Brand Name: AutoMeter Add-On: N/A Extended Information: Country of Origin: United States Emissions : Released Life Cycle Status: Available To Order Packing Information: Quantity of Each: 1 Package UOM: EA Dimension: 3.5 x 4.75 x 4.5 inches Weight: 0.45 lb PDF: PDF: 2650-561X-10