How to wire a Tachometer Mercury 1965

[etbill52]

Help again:
Have a 1973 Larson boat, The motor has been changed, it has a Mercury 1000, 100 HP, the boat has a tachometer but it isn't hooked up. Years ago I knew how to wire thes things up but have forgot where the wires go on the motor on one this old. Thanks for any help.

 

[diaric]

Re: How to wire a Tachometer Mercury 1965

as long as the tach is set up for that motor or has adjustable pole settings your ok. run a wire from either yellow wires that hook up to the rectifyer on the motor.

 

[etbill52]

Re: How to wire a Tachometer Mercury 1965

I'm not sure if it is or not, the boat is a 1973, someone replace the motor with a 1965 Mercury 1000 100 hp, I will check and see, Thanks for your fast answer.
Bill

 

[diaric]

Re: How to wire a Tachometer Mercury 1965

most of the aftermarket tachs are adjustable. you can search their sites for instruction manuals for specific wiring

 

[etbill52]

Re: How to wire a Tachometer Mercury 1965

Will do, again Thanks.

 

[ricksrster]

Re: How to wire a Tachometer Mercury 1965

The old style tachs were ignition driven and the new style tachs are alternator driven.

 

[etbill52]

Re: How to wire a Tachometer Mercury 1965

The old style tachs were ignition driven and the new style tachs are alternator driven.

This is the old style tach, do you know where on the ignition I should run a wire?

 

[diaric]

Re: How to wire a Tachometer Mercury 1965

find the make and model number of the tach. if its a quicksilver, some models were engine specific