Speedhut 3-3_8 inch & 4 inch Diesel Tachometer - Manual (Page 2)

Press and hold gauge button down and gauge needle will display maximum peak reading for as long as button is pressed down. LED (Revolution Tachometer) will stay lit while showing
peak reading.
Note if button is held for longer than 10 seconds, tach will enter shift light set mode. (see step 5 below)
To retain peak reading (NOT CLEAR IT):
While showing peak reading, release button, wait 2 seconds, gauge will return to normal operation and retain the peak reading.
To clear peak reading:
While showing peak reading, release the button, and immediately press and release the button again within 2 seconds.The LEDs will flash(Revolution Tachometer) 2 times and
pointer will travel to zero to indicate peak has been cleared.
Peak memory recall feature 3
Set your shift point
The following procedures can be done at any time during operation of the tachometer
while the tachometer has power.
Shift point set
1. Press and HOLD the button for approx. 10 seconds (hold past peak recall). Pointer will travel to current set shift point.
2. Press and Hold to move pointer up and down dial. Releasing button and pressing and holding again will change
pointer movement direction.
3. At desired shift point, release button for 5 seconds. LED will blink and pointer will return to zero position on dial.
New shift point is now stored in memory.
4
Note: Legacy tachometers without internal shift lights can still use a mini shift light. If you
have a legacy tachometer you will need to have a shift light plugged into the back of the gauge
in order to set the shift point.
Note: Tachometers have port
on right side for Mini Shift Light.
(sold separately)
Note: If your tach does not have
a button on front of tach, plug
button cable in back on
LEFT SIDE only
Note: Tachometers can also use the optional mini shift light (sold separately). Simply, plug the
mini shift light into the RIGHT port (see fig 2) on the back of the tachometer and
the mini shift light will operate at the same time as the internal LED shift light. Legacy
tachometers that do NOT have internal LED shift lights can still use a Mini Shift Light.
Gauge Top
(optional accessory)
Mini Shift Light
right side only
(fig 2)
***The following steps apply to 3-3/8” Legacy and Revolution and 4” Legacy Diesel Tachometers***
(Please see the next page for 4” Revolution Diesel Tachometers)
3-3/8" & 4” Diesel Tachometer Instructions
(htz tach)
WARRANTY - Speedhut inc. warrants to the consumer for a period of 5 years from the date of purchase that the product will be free from defects in materials or workmanship.
Speedhut warrants to the consumer for a "LIFE-TIME" that the gauge circuit board will be free from defects in materials or workmanship. Please contact Speedhut service dept.
If you have a problem with this gauge. [email protected]
Set your shift light LED brightness 5
A unique day and night shift light LED brightness setting can be set on the tachometer. This setting effects internal shift LEDs (optional on some models) and remote Mini Shift Light if installed.
Each setting has 4 possible brightness positions including 'off'. The tachometer automatically knows which day or night value to set by sensing the voltage on the white wire connected to your
dash lighting. Setting the LED brightness value with your lights 'on' will result in setting the 'night' brightness value. And likewise, setting the LED brightness value with your lights 'off' will result
in setting the 'day' brightness value.
At any time while tachometer has power, press and release LED button to show current LED brightness. After a couple second delay, if button is not pressed this current setting is re-saved.
LED will blink to indicate setting has been saved. To change LED brightness press and release the buton to advance to next higher brightness level. LED brightness will loop through 5 possible
brightness settings including off as you press and release the button. At acceptable brightness level do not press button for couple second delay. LED will blink to indicate setting has been
saved.
Note: Setting the brightness level when gauge lighting is on, will set the night brightness level. Setting the brightness level when gauge lighting is off will set day brightness level.
Note: Optional mini shift light will also adjust brightness in accordance with the internal tach LED.