TachMatch Specifications

Dimensions

2.250" W x 4.375" L x 1.150" H

Mounting Hole Dimensions

1.750" x 1.9"

Mounting Hole Size

0.201" diameter

Mounting Screw Size

#8 x 1/2"  (maximum size usable #10)

Weight (electronics module)

6.0 Oz.

Wire Length

36" red, white, orange (unterminated); 6" black (with #10 ring terminal)

Wire Size

#16 red, black, orange; #18 white

Pin Numbers

1-Red (+12V), 2-Black (Gnd), 3-Orange (Tach out), 4-White (Tach Trigger In)

Operating Temperature

240 deg F in 70 deg F ambient with current-mode tachometer (typical); no significant rise from ambient temperature when driving voltage-mode tachometer.

Power Input Requirements

12-14.4 DcV switched input (< 25mA)

Ground Wire Current

Voltage-mode tachometer: < 25mA; Current-mode tachometer: < 1 A average (driving non-reactive load).

Frequency Conversion Ratios

1:1 (e.g., 8:8),  4:3 (e.g., 8:6),  3:2 (e.g., 6:4),  2:1 (e.g., 8:4), 1.33:1 (e.g., 6:8)

Maximum RPM

~8,000 RPM for 8 cyl, > 10,000 RPM for 6 cyl and less

LED Indicator Function

Power on, engine not running: steady on;

Engine running: turns off during trigger input.