1992 Pro 16 - Need to install a tach

[MUSER3]

My motor is Johnson 25 hp 2cyl. (TJ25ENELS) Any suggestions about wiring or which tach would be much appreciated. There is an unused 3wire connector in the shift/speed control area. Would that be tachometer wiring?
Thanks
Lee

[MUSER3]

HAPPY THANKSGIVING!!!
now someone please help me with the tach question.

[Geezer1]

I believe your best bet would be to locate a wiring diagram for that particular throttle control. You may be able to find it at the Bombardier website. Your ABSOLUTE best bet though, is to locate an OMC service manual for your particular engine (should be plenty of them on ebay fairly cheap) where they will have the wiring diagram for both the motor & throttle control. That manual is something you should have on hand for many reasons. When you have it, you'll find that you'll use it quite a bit. Geezer.

[MUSER3]

thanks!

[MUSER3]

Sadly the manual is no help at all.

Here's what I found at ENMCO.com


Item # PT15E2, Surface Mount
$32.00 ( Quantity Discount available )


PT15b

larger image
Surface Mount

Sparks once per rev
Surface Mounted
Self-Powered
Completely Sealed
Solid state electronics
Quartz crystal
Wide operating temperature range
High reliability
Indicates operation in RPMs and hours
Factory set 1, 2, 4, cycle engine, or hour meter only
ISO 9001:2000 Certified
Made in the U.S.A.

ENM is proud to present the new series PT15 surface mounted, selfpowered Digital Tach/Hour meter.The PT15 keeps track of true engine RPM and running time for all types of gasoline engines.The unit is powered by an internal lithium battery. No external power connection is required. The operation of the Tach/Hour meter is triggered by an external wire lead, wrapped around the spark plug wire of the engine. Since the unit is triggered by the spark of the engine, the hours and the RPM display actual operation.This is useful for maintenance and warranty applications for any type of engine-powered machinery.





Specifications
Operating Battery Life
Internal lithium battery 35,000 hours continuous running.
Internal Lithium Battery 8 years plus non-replaceable
Operating Temperature
Standard: -30 to +85 °C
Vibration resistance @ 1 to 8 Gs.
Withstands 10 to 75 Hz
Wire Length
3.5 ft.
Compatibility
sparks once/rev