Auto Meter 1490 User Manual

Lens cleaning, Calibration, In-dash electric tachometer

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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

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