Auto Meter 1490 - Manual

1 1 2 2 1 2
4 CYL. / 2 PULSE 6 CYL. / 3 PULSE 8 CYL. / 4 PULSE
DN DN DN UP UP UP
Lens Cleaning
To prevent scratching the lens when
cleaning, use a mild, soapy solution to
clean. Wipe lightly with a soft cloth.
Calibration
IMPORTANT: This tachometer is factory calibrated to operate on 8 cylinder
engines. For 4 or 6 cylinder engines, it is necessary to make the proper adjustments to
adapt this tachometer to your cylinder range.
1 3 ⁄
4
"
3 3 ⁄
4
" 3 11 ⁄
32
" 4 15 ⁄
16
"
2 3 ⁄
8
"
4 19 ⁄
32
"
3 3 ⁄
8
" Models 5" Models
IMPORTANT
WEAR
SAFETY GLASSES
INSTALLATION INSTRUCTIONS
IN-DASH ELECTRIC TACHOMETER
For Use on Early Model & Most Electronic Ignitions
®
2650-1033A
Note:
Locate the switch hole on the back of the tachometer. Move each of the two
switches to the proper cylinder selection according to the diagram
illustration on the right. Apply included label over switch hole.
NOTE: This tachometer has an air core meter. With
power off, it is normal for the pointer to leave
zero. When power is applied, the pointer will
move to the correct position.
Figure A.
8 CYL. (4 pulse)- Both switches up.
6 CYL. (3 pulse)- Switch One down, Switch Two up.
4 CYL. (2 pulse)- Both switches down.
If you are unsure of your vehicle s pulse(s) per revolution or specific
calibration requirements, contact Auto Meter s Service Dept. at (815)
899-0851, or go to www.autometer.com/hp/techtips for information.
1 2
SIG LAMP OUT
+12V GND
GND
LAMP + 12V
SWITCH HOLE
3 3 ⁄
8
" SIZE SHOWN
Figure A.
Models: 4497, 4498, 4798, 4898 This tachometer operates on most early model
ignitions, factory electronic and high
performance electronic racing ignitions.
Mounting
1. Mount a 3 3 ⁄
8
" tachometer in a 3 3 ⁄
8
" dia. hole and a 5" tachometer in a 4 5 ⁄
8
" dia. hole in the dashboard. (Be careful not to cut the hole
too large.)
2. Cut a 3 ⁄
8
" dia. hole in the firewall for the tachometer wires. Place a rubber grommet in the hole and route the connector wires through
the grommet to the engine compartment.
3. Connect the tachometer wires as shown in the Wiring Section.
4. Secure the tachometer to the dashboard using the provided bracket and hardware.
QUESTIONS :
If after completely reading these instructions you have questions regarding the operation or installation of your instrument(s),
please contact Auto Meter Technical Service at 815-899-0801.
You may also email us at [email protected].
Additional information can also be found at http://www.autometer.com/tech_faq.aspx