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ContinuousWave: Small Boat Electrical
1998 70HP Johnson 3 Cylinder Tachometer
|Author||Topic: 1998 70HP Johnson 3 Cylinder Tachometer|
posted 10-02-2010 08:57 PM ET (US)
I just got a 1978 Boston Whaler 15 Sport with a 1998 70HP Johnson Engine on it.
I'm trying to find a compatible system check tach that will work for my engine/setup.
I was looking at three in particular:
I know the first choice is an original OMC with a different part number, but i don't know if it will work for my setup.
Any help will be greatly appreciated.
posted 10-03-2010 08:47 AM ET (US)
Any of the tachs made for System Check will work on your motor, or other OMC/BRP motors 1996 orlater.
The OMC tach number you posted has been superceded several times so that may be a older stock tachometer, not a recent one.
You will also need a warning horn to complete the system.
posted 10-03-2010 09:10 AM ET (US)
Also you might want to consider the Tachometer face divisions. I prefer a gauge in 100 rpm increments not 200 rpm.
Evinrude gauges come both styles, #177107 is an example of 100 rpm gauge face.
Easy to find and buy on the internet,maybe get the water pressure gauge and voltmeter too and combine shipping with the Tach.
posted 10-03-2010 02:34 PM ET (US)
Thanks for the info.
I do appreciate your input and definitely made me at ease knowing that either one of these tachs with system checks will work.
= Connector with 2 pins
If anyone knows what these are or where i can find a schematic of the wire harness so i can match the colored wires, that would help allot.
posted 10-03-2010 03:09 PM ET (US)
The harness also have other wires/connector on it that i would appreciate any help in identifying :)
= Connector with 2 pins -- for warning horn assembly
posted 10-03-2010 04:10 PM ET (US)
Thanks a bunch, that helps ALLOT!!
As for the Warning Horn kit (2 pin connector), is that basically for a built in horn?
posted 10-03-2010 05:50 PM ET (US)
#176360 is the warning horn
posted 10-03-2010 06:04 PM ET (US)
Oh, i see...
this is not a "horn", this is a buzzer to alert you of an engine problem etc.. :)
Thanks, that makes sense and coincides with what i was seeing in pictures of the item for sale.
Thanks again for all the help :)
posted 10-04-2010 12:38 AM ET (US)
Popular vernacular as well as the factory call it a warning horn.
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